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|Can we really detect any asteroids in space with accuracy and do we have any real means of destroying it?||Yes, we can detect new asteroids when they are still in space. Every night dozens of new asteroids are found, including a few that can come close to the Earth.|
|Regarding the second part of the question, the goal would be to deflect them more than destroy them, and it is technologically possible. The Hera/DART mission currently being developed by ESA and NASA will demonstrate exactly this capability.|
|I always wanted to ask: what is worse for life on Earth - to be hit by a single coalesced asteroid chunk, or to be hit by a multiple smaller pieces of exploded asteroid, aka disrupted rubble pile scenario?||DVK: This is difficult to answer. If the rubble is small (centimetres to meters) it is better to have lots of small ones – they’d create nice bright meteors. If the rubble pieces are tens of meters it doesn’t help.|
|Let’s say that hypothetically, an asteroid the size of Rhode Island is coming at us, it will be a direct hit - you’ve had the resources and funding you need, your plan is fully in place, everything you’ve wanted you got. The asteroid will hit in 10 years, what do you do?||DVK: I had to look up how big Rhode Island is – a bit larger than the German Bundesland ‘Saarland’. Ok – this would correspond to an object about 60 km in diameter, right? That’s quite big – we would need a lot of rocket launches, this would be extremely difficult. I would pray. The good news is that we are quite convinced that we know all objects larger than just a few kilometers which come close to our planet. None of them is on a collision course, so we are safe.|
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|Why are you quite convinced that you know all object of that size? And what is your approach in finding new celestial bodies?||DVK: There was a scientific study done over a few years (published in Icarus 2018, search for Granvik) where they modelled how many objects there are out there. They compared this to the observations we have with the telescopic surveys. This gives us the expected numbers shown here on our infographic: https://www.esa.int/ESA_Multimedia/Images/2018/06/Asteroid_danger_explained|
|There are additional studies to estimate the ‘completeness’ – and we think that we know everything above roughly a few km in size.|
|To find new objects, we use survey telescopes that scan the night sky every night. The two major ones are Catalina and Pan-STARRS, funded by NASA. ESA is developing the so-called Flyeye telescope to add to this effort https://www.esa.int/ESA_Multimedia/Images/2017/02/Flyeye_telescope.|
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|Thanks for the answer, that's really interesting! It's also funny that the fist Flyeye deployed is in Sicily, at less than 100km from me, I really had no idea||DVK: Indeed, that's cool. Maybe you can go and visit it one day.|
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|What about Interstellar objects however, like Oumuamua?||DVK: The two that we have seen - 'Oumuamua and comet Borisov - were much smaller than the Saarland (or Rhode Island ;-) - not sure about Borisov, but 'Oumuamua was a few hundred meters in size. So while they could indeed come as a complete surprise, they are so rare that I wouldn't worry.|
|Would the public be informed if an impending asteroid event were to happen? And, how would the extinction play out? Bunch of people crushed to death, knocked off our orbit, dust clouds forever?||DVK: We do not keep things secret – all our info is at the web page http://neo.ssa.esa.int. The ‘risky’ objects are in the ‘risk page’. We also put info on really close approaches there. It would also be very difficult to keep things ‘under cover’ – there are many high-quality amateur astronomers out there that would notice.|
|In 2029 asteroid Apophis will fly really close to Earth, even closer than geostationary satellites. Can we use some of those satellites to observe the asteroid? Is it possible to launch very cheap cube sats to flyby Apophis in 2029?||DVK: Yes an Apophis mission during the flyby in 2029 would be really nice. We even had a special session on that topic at the last Planetary Defense Conference in 2019, and indeed CubeSats were mentioned. This would be a nice university project – get me a close-up of the asteroid with the Earth in the background!|
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|So you’re saying it was discussed and shelved?||In the conference we just presented ideas. To make them happen needs funding - in the case of ESA the support of our member countries. But having something presented at a conference is the first step. One of the results of the conference was a statement to space agencies to consider embarking on such a mission. See here: https://www.cosmos.esa.int/documents/336356/336472/PDC_2019_Summary_Report_FINAL_FINAL.pdf/341b9451-0ce8-f338-5d68-714a0aada29b?t=1569333739470|
|Go to the section 'resolutions'. This is now a statement that scientists can use to present to their funding agencies, demonstrating that it's not just their own idea.|
|Thanks for doing this AMA! Did we know the Chelyabinsk meteor in 2013 (the one which had some great videos on social media) was coming? Ig not, how comes? Also, as a little side one, have there been any fatalities from impact events in the past 20 years?||Unfortunately, the Chelyabinsk object was not seen in advance, because it came from the direction of the Sun where ground-based telescopes cannot look.|
|No known fatalities from impacts have happened in the past 20 years, although the Chelyabinsk event did cause many injuries, fortunately mostly minor.|
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|How often do impacts from that direction happen, compared to impacts from visible trajectories?||In terms of fraction of the sky, the area that cannot be easily scanned from the ground is roughly a circle with a radius of 40°-50° around the current position of the Sun, corresponding to ~15% of the total sky. However, there is a slight enhancement of objects coming from that direction, therefore the fraction of objects that may be missed when heading towards us is a bit higher.|
|However, this applies only when detecting an asteroid in its "final plunge" towards the Earth. Larger asteroids can be spotted many orbits earlier, when they are farther away and visible in the night side of the sky. Their orbits can then be determined and their possible impacts predicted even years or decades in advance.|
|There must be a trade-off when targeting asteroids as they get closer to Earth, is there a rule of thumb at what the best time is to reach them, in terms of launch time versus time to reach the asteroid and then distance from Earth?||DVK: Take e.g. a ‘kinetic impactor’ mission, like what DART and Hera are testing. Since we only change the velocity of the asteroid slightly, we need to hit the object early enough so that the object has time to move away from it’s collision course. Finding out when it is possible to launch requires simulations done by our mission analysis team. They take the strength of the launcher into account, also the available fuel for course corrections, and other things. Normally each asteroid has its own best scenario.|
|Do you also look at protecting the moon from asteroids? Would an impact of a large enough scale potentially have major impacts on the earth?||DVK: There are programmes that monitor the Moon and look for flashes from impacting small asteroids (or meteoroids) - https://neliota.astro.noa.g or the Spanish MIDAS project. We use the data to improve our knowledge about these objects. These programmes just look at what is happening now.|
|For now we would not do anything if we predicted a lunar impact. I guess this will change once we have a lunar base in place.|
|Why aren't there an international organisation comprised of countries focused on the asteroid defence? Imagine like the organisation with multi-billion $ budget and program of action on funding new telescopes, asteroid exploration mission, plans for detection of potentially dangerous NEA, protocols on action after the detection - all international, with heads of states discussing these problems?||DVK: There are international entities in place, mandated by the UN: The International Asteroid Warning Network (http://www.iawn.net) and the Space Mission Planning Advisory Group (http://www.smpag.net). These groups advise the United Nations. That is exactly where we come up with plans and protocols on action. But: They don’t have budget – that needs to come from elsewhere. I am expecting that if we have a real threat, we would get the budget. Right now, we don’t have a multi-billion budget.|
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|There is no actual risk of any sizable asteroids hitting earth in the foreseeable future. Any preparation for it would just be a waste of money.||DVK: Indeed, as mentioned earlier, we do not expect a large object to hit is in the near future. We are mainly worried about those in the size range of 20 m to 40 m, which happen on average every few tens of years to hundreds of years. And where we only know a percent of them or even less.|
|President Obama wanted to send a crewed spacecraft to an asteroid - in your opinion is this something that should still be done in the future, would there be any usefulness in having a human being walk/float on an asteroid's surface?||DVK: It would definitely be cool. I would maybe even volunteer to go. Our current missions to asteroids are all robotic, the main reason is that it is much cheaper (but still expensive) to get the same science. But humans will expand further into space, I am sure. If we want to test human exploration activities, doing this at an asteroid would be easier than landing on a planet.|
|this is another reply||Yes, but I am slightly biased by the fact that I work at the European astronaut centre ;) There exist many similarities to what we currently do for EVA (extra vehicular activities) operations on the International Space Station versus how we would 'float' around an asteroid. Slightly biased again, but using such a mission to test exploration technologies would definitely still have value. Thanks Obama! - AC|
|I've heard that some asteroids contains large amounts of iron. Is there a possibility that we might have "space mines" in the far away future, if our own supply if iron runs out?||Yes, this is a topic in the field known as space mining, part of what we call Space Resources. In fact, learning how we can process material we might find on asteroids or other planetary bodies is increasingly important, as it opens up the opportunities for sustainable exploration and commercialization. Its a technology we need to master, and asteroids can be a great target for testing how we can create space mines :) - AC|
|By how much is DART expected to deflect Didymos? Do we have any indication of the largest size of an asteroid we could potentially deflect?||PM: Didymos is a binary asteroid, consisting of a main asteroid Didymos A (~700m) and a smaller asteroid Didymos B (~150m) orbiting around A with a ~12 hours period. DART is expected to impact Didymos B and change its orbital period w.r.t. Didymos A of ~1%. (8 mins)|
|The size of Didymos B is the most representative of a potential threat to Earth (the highest combination of probability and consequence of impacts), meaning smaller asteroids hit the Earth more often but have less severe consequences, larger asteroids can have catastrophic consequences but their probability of hitting the earth is very very low.|
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|Why is there less probability of larger asteroids hitting earth?||DVK: There are less large objects out there. The smaller they are, the more there are.|
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|Is there any chance that your experiment will backfire and send the asteroid towards earth?||PM: Not at all, or we would not do that :) Actually Dimorphos (the Didymos "moon") will not even leave its orbit around Didymos. It will just slightly change its speed.|
|I'm sure you've been asked this many times but how realistic is the plot of Armageddon? How likely is it that our fate as a species will rely on (either) Bruce Willis / deep sea oil drillers?||Taking into consideration that Bruce Willis is now 65 and by the time HERA is launched he will be 69, I do not think that we can rely on him this time (although I liked the movie).|
|HERA will investigate what method we could use to deflect asteroid and maybe the results will show that we indeed need to call the deep sea oil drillers.|
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|So then would it be easier to train oil drillers to become astronauts, or to train astronauts to be oil drillers?||I do not know which one would be easier since I have no training/experience of deep see oil drilling nor becoming an astronaut, but as long as the ones that would go to asteroid have the sufficient skills and training (even Bruce Willis), I would be happy.|
|If budget was no object, which asteroid would you most like to send a mission to?||Nice question! For me, I'd be looking at an asteroid we know something about, since I would be interested in using it for testing how we could extract resources from it. So for me, I would choose Itokawa (https://en.wikipedia.org/wiki/25143_Itokawa), which was visited by Hayabusa spacecraft. So we already have some solid prospecting carried out for this 'roid! - AC|
|this is another reply||Not sure if it counts as an asteroid, but Detlef and myself would probably choose ʻOumuamua, the first discovered interstellar object.|
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|Do we even have the capability to catch up to something like that screaming through our solar system? That thing has to have a heck of a velocity to just barrel almost straight through like that.||DVK: Correct, that would be a real challenge. We are preparing for a mission called 'Comet Interceptor' that is meant to fly to an interstellar object or at least a fresh comet - but it will not catch up with it, it will only perform a short flyby.|
|After proving to be able to land on one, could an asteroid serve as a viable means to transport goods and or humans throughout the solar system when the orbit of said asteroid proves beneficial. While it is probably quite problematic to land the payload, it could save fuel or am I mistaken?||Neat idea! Wonder if anyone has done the maths on the amount of fuel you would need/save vs certain targets. - AC|
|PM: To further complement, the saving is quite marginal indeed because in order to land (softly) on the asteroid you actually need to get into the very same orbit of that asteroid . At that point your orbit remains the same whether you are on the asteroid or not..|
|can the current anti-ballistic missiles systems intercept a terminal phase earth strike asteroid? or it is better to know beforehand and launch an impacting vehicle into space?||DVK: While I do see presentations on nuclear explosions to deflect asteroids at our professional meetings, I have not seen anybody yet studying how we could use existing missile systems. So it's hard to judge whether existing missiles would do the job. But in general, it is better to know as early as possible about a possible impact and deflect it as early as possible. This will minimize the needed effort.|
|How much are we prepared against asteroid impacts at this moment?||DVK: 42… :-) Seriously – I am not sure how to quantify ‘preparedness’. We have international working groups in place, mentioned earlier (search for IAWN, SMPAG). We have a Planetary Defence Office at ESA, a Planetary Defense Office at NASA (who spots the difference?), search the sky for asteroids, build space missions… Still we could be doing more. More telescopes to find the object, a space-based telescope to discover those that come from the direction of the Sun. Different test missions would be useful, … So there is always more we could do.|
|Have you got any data on the NEO coverage? Is there estimations on the percentage of NEOs we have detected and are tracking? How can we improve the coverage? How many times have asteroids been able to enter earths atmosphere without being detected beforehand?||Here’s our recently updated infographics with the fraction of undiscovered NEOs for each size range: https://www.esa.int/ESA_Multimedia/Images/2018/06/Asteroid_danger_explained|
|As expected, we are now nearly complete for the large ones, while many of the smaller ones are still unknown.|
|In order to improve coverage, we need both to continue the current approach, centered on ground-based telescopes, and probably also launch dedicated telescopes to space, to look at the fraction of the sky that cannot be easily observed from the ground (e.g., towards the Sun).|
|Regarding the last part of your question, small asteroids enter the Earth atmosphere very often (the infographics above gives you some numbers), while larger ones are much rarer.|
|In the recent past, the largest one to enter our atmosphere was about 20 meters in diameter, and it caused the Chelyabinsk event in 2013. It could not be detected in advance because it came from the direction of the Sun.|
|We have however detected a few small ones before impact. The first happened in 2008, when a ~4-meter asteroid was found to be on a collision course less than a day before impact, it was predicted to fall in Northern Sudan, and then actually observed falling precisely where (and when) expected.|
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|DVK: And to add what MM said - Check out http://neo.ssa.esa.int. There is a ‘discovery statistics’ section which provides some of the info you asked about. NASA is providing similar information here https://cneos.jpl.nasa.gov/stats/. To see the sky which is currently covered by the survey telescopes, you need to service of the Minor Planet Center which we all work together with: http://www.minorplanetcenter.org, ‘observers’, ‘sky coverage’. That is a tool we use to plan where we look with our telescopes, so it is a more technical page.|
|Are there any automatic systems for checking large numbers of asteroids orbits, to see if the asteroid's orbit is coming dangerously close to Earth, or is it done by people individually for every asteroid? I ask it because LSST Rubin is coming online soon and you know it will discover a lot of new asteroids.||Yes, such systems exist, and monitor all known and newly discovered asteroids in order to predict possible future impacts.|
|The end result of the process is what we call "risk list": http://neo.ssa.esa.int/risk-page|
|It is automatically updated every day once new observational data is processed.|
|What are your favourite sci-fi series?||DVK: My favorites are ‘The Expanse’, I also liked watching ‘Salvation’. For the first one I even got my family to give me a new subscription to a known internet streaming service so that I can see the latest episodes. I also loved ‘The Jetsons’ and ‘The Flintstones’ as a kid. Not sure the last one counts as sci-fi though. My long-time favorite was ‘Dark Star’.|
|this is another reply||Big fan of The Expanse at the moment. Nice, hard sci-fi that has a good impression of being grounded in reality - AC|
|this is another reply||When I was a kid I liked The Jetsons, when growing up Star Trek, Star wars and I also used to watch with my sister the 'V'.|
|When determining the potential threat of a NEA, is the mass of an object a bigger factor or size? I'm asking because I'm curious if a small but massive object (say, with the density of Psyche) could survive atmospheric entry better than a comparatively larger but less massive object.||The mass is indeed what really matters, since it’s directly related with the impact energy.|
|And as you said composition also matters, a metal object would survive atmospheric entry better, not just because it’s heavier, but also because of its internal strength.|
|What are your thoughts on asteroid mining as portrayed in sci-fi movies? Is it feasible? If so would governments or private space programs be the first to do so?What type of minerals can be found on asteroids that would merit the costs of extraction?||Certainly there is valuable stuff you can find on asteroids. For example, the likely easiest material you can harvest from an asteroid would be volatiles such as H2O. Then you have industrial metals, things like Iron, Nickel, and Platinum group metals. Going further, you can break apart many of the oxide minerals you would find to get oxygen (getting you closer to producing rocket fuel in-situ!). Its feasible, but still needs alot of testing both here on Earth and eventually needs to be tested on a target. It may be that governments, via agencies like ESA or NASA, may do it first, to prove the principles somewhat, but I know many commercial entities are also aggresively working towards space mining. To show you that its definitely possible, I'd like to plug the work of colleagues who have processed lunar regolith (which is similar to what you may find on asteroids) to extract both oxygen and metals. Check it out here: http://www.esa.int/ESA_Multimedia/Images/2019/10/Oxygen_and_metal_from_lunar_regolith|
|Will 2020's climax be a really big rock?||DVK: Let's hope not...|
|Considering NASA, ESA, IAU etc. is working hard to track Earth-grazing asteroids, how come the Chelyabinsk object that airburst over Russia in 2013 came as a total surprise?||The Chelyabinsk object came from the direction of the Sun, where unfortunately ground-based telescopes cannot look at. Therefore, it would not have been possible to discover it in advance with current telescopes. Dedicated space telescopes are needed to detect objects coming from this direction in advance.|
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|Is this to say that it was within specific solid angles for the entire time that we could have observed it given its size and speed?||Yes, precisely that. We got unlucky in this case.|
|Have any of you read Lucifer's Hammer by Larry Niven? In your opinion, how realistic is his depiction of an asteroid strike on Earth?||DVK: I have – but really long ago, so I don’t remember the details. But I do remember that I really liked the book, and I remember I always wanted to have a Hot Fudge Sundae when reading it.|
|I was thinking about the asteroid threat as a teen and came up with this ideas (Hint: they are not equally serious, the level of craziness goes up real quick). Could you please comment on their feasibility? 1. Attaching a rocket engine to an asteroid to make it gradually change trajectory, do that long in advance and it will miss Earth by thousands of km 2. Transporting acid onto asteroid (which are mainly metal), attaching a dome-shaped reaction chamber to it, using heat and pressure to then carry out the chemical reaction to disintegrate asteroids 3. This one is even more terrible than a previous one and totally Dan Brown inspired — transporting antimatter on asteroid, impacting and causing annihilation. Thank you for this AMA and your time!||DVK: Well the first one is not so crazy, I have seen it presented... the difficulty is that all asteroids are rotating in one way or another. So if you continuously fire the engine it would not really help. You'd need to switch the engine on and off. Very complex. And landing on an asteroid is challenging too. Just using the 'kinetic impactor' which we will test with DART/Hera (described elsewhere in this chat) is simpler. Another seriously proposed concept is to put a spacecraft next to an asteroid and use an ion engine (like we have on our Mercury mission BepiColombo) to 'push' the asteroid away.|
|As for 2 and 3 I think I will not live to see that happening ;-)|
|What is the process to determine the orbit of a newly discovered asteroid?||The process is mathematically quite complex, but here's a short summary.|
|Everything starts with observations, in particular with measurements of the position of an asteroid in the sky, what we call "astrometry". Discovery telescopes extract this information from their discovery images, and make it available to everybody.|
|These datapoints are then used to calculate possible trajectories ("orbits") that pass through them. At first, with very few points, many orbits will be possible.|
|Using these orbits we can extrapolate where the asteroid will be located during the following nights, use a telescope to observe that part of the sky, and locate the object again.|
|From these new observations we can extract new "astrometry", add it to the orbit determination, and see that now only some of the possible orbits will be compatible with the new data. As a result, we now know the trajectory better than before, because a few of the possible orbits are not confirmed by the new data.|
|The cycle can then continue, with new predictions, new observations, and a more accurate determination of the object's orbit, until it can be determined with an extremely high level of accuracy.|
|What are some asteroids that are on your "watchlist"?||We have exactly that list on our web portal: http://neo.ssa.esa.int/risk-page|
|It's called "risk list", and it includes all known asteroids for which we cannot exclude a possible impact over the next century. It is updated every day to include newly discovered asteroids, and remove those that have been excluded as possible impactors thanks to new observations.|
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|That's quite a list!! Do you guys ever feel stressed or afraid when you have to add another dangerous candidate (and by dangerous I mean those above 200m) is added to this Risk List?||Yes, when new dangerous ones are added it's important that we immediately do our best to gather more data on them, observing them with telescopes in order to get the information we need to improve our knowledge of their orbit.|
|And then the satisfaction of getting the data needed to remove one from the list is even greater!|
|What inspired you to go into this field of study?||I was fascinated by astronomy in general since I was a kid, but the actual "trigger" that sparked my interest in NEOs was a wonderful summer course on asteroids organized by a local amateur astronomers association. I immediately decided that I would do my best to turn this passion into my job, and I'm so happy to have been able to make that dream come true.|
|this is another reply||DVK: I started observing meteors when I was 14, just by going outside and looking at the night sky. Since then, small bodies in the solar system were always my passion.|
|As a layperson, I still think using nuclear weapons against asteroids is the coolest method despite better methods generally being available. Do you still consider the nuclear option the cool option, or has your expertise in the field combined with the real-life impracticalities made it into a laughable/silly/cliche option?||DVK: We indeed still study the nuclear option. There are legal aspects though, the ‘outer space treaty’ forbids nuclear explosions in space. But for a large object or one we discover very late it could be useful. That’s why we have to focus on discovering all the objects out there as early as possible – then we have time enough to use more conventional deflection methods, like the kinetic impactor (the DART/Hera scenario).|
|It seems like doing this well would require international cooperation, particularly with Russia. Have you ever reached out to Russia in your work? Do you have a counterpart organization there that has a similar mission?||DVK: Indeed international cooperation is important - asteroids don't know about our borders! We work with a Russian team to perform follow-up observations of recently discovered NEOs. Russia is also involved in the UN-endorsed working groups that we have, IAWN and SMPAG (explained in another answer).|
|how much can experts tell from a video of a fireball or meteor? Can you work out what it's made of and where it came from? https://www.reddit.com/space/comments/hdf3xe/footage_of_a_meteor_at_barrow_island_australia/?utm_source=share&utm_medium=web2x||If multiple videos or pictures, taken from different locations, are available, then it's possible to reconstruct the trajectory, and extrapolate where the object came from.|
|Regarding the composition, it's a bit more difficult if nothing survives to the ground, but some information can be obtained indirectly from the fireball's color, or its fragmentation behavior. If a spectral analysis of the light can be made, it's then possible to infer the chemical composition in much greater detail.|
|I've always wanted to know what the best meteorite buying site is and what their average price is??||DVK: Serious dealers will be registered with the 'International Meteorite Collectors Association (IMCA)' - https://www.imca.cc/. They should provide a 'certificate of authenticity' where it says that they are member there. If you are in doubt, you can contact the association and check. Normally there are rough prices for different meteorite types per gram. Rare meteorites will of course be much more expensive than more common ones. Check the IMCA web page to find a dealer close to you.|
|Just read through Aidans link to the basaltic rock being used as a printing material for lunar habitation. There is a company called Roxul that does stone woven insulation that may be able to shed some light on the research they have done to minimize their similarity to asbestos as potentially carcinogenic materials deemed safe for use in commercial and residential applications. As the interior surfaces will essentially be 3D printed lunar regolith what are the current plans to coat or dampen the affinity for the structure to essentially be death traps for respiratory illness?||At least initially, many of these 3d printed regolith structures would not be facing into pressurised sections, but would rather be elements placed outside and around our pressure vessels. Such structures would be things like radiation shields, landing pads or roadways, etc. In the future, if we move towards forming hermetically sealed structures, then your point is a good one. Looking into terrestrial solutions to this problem would be a great start! - AC|
|What kind of career path does it take to work in the asteroid hunting field?||It's probably different for each of us, but here's a short summary of my own path.|
|I became interested in asteroids, and near-Earth objects in particular, thanks to a wonderful summer course organized by a local amateur astronomers association. Amateur astronomers play a great role in introducing people, and young kids in particular, to these topics.|
|Then I took physics as my undergrad degree (in Italy), followed by a Ph.D. in astronomy in the US (Hawaii in particular, a great place for astronomers thanks to the exceptional telescopes hosted there).|
|After finishing the Ph.D. I started my current job at ESA's NEO Coordination Centre, which allowed me to realize my dream of working in this field.|
|this is another reply||DVK: Almost all of us have a Master's degree either in aerospace engineering, mathematics, physics/astronomy/planetary science, or computer science. Some of us - as MM - have a Ph.D. too. But that's not really a requirement. This is true for our team at ESA, but also for other teams in other countries.|
|What is the likelihood of an asteroid hitting the Earth In the next 200 years?||It depends on the size, large ones are rare, while small ones are much more common. You can check this infographics to get the numbers for each size class: https://www.esa.int/ESA_Multimedia/Images/2018/06/Asteroid_danger_explained|
|Have you played the Earth Defence Force games and if you have, which one is your favourite?||No I have not played the Earth Defence Force games, but I just looked it up and I think I would liked it. Which one would you recommend?|
|How close is too close to earth? Space is a SUPER vast void so is 1,000,000 miles close, 10,000,000? And if an asteroid is big enough can it throw earth off its orbit?||DVK: Too close for my taste is when we compute an impact probability > 0 for the object. That means the flyby distance is zero :-) Those are the objects on our risk page http://neo.ssa.esa.int/risk-page.|
|If an object can alter the orbit of another one, we would call it planet. So unless we have a rogue planet coming from another solar system (verrry unlikely) we are safe from that.|
|How can I join you when I'm older?||DVK: Somebody was asking about our career paths... Study aerospace engineering or math or physics or computer science, get a Masters. Possibly a Ph.D. Then apply for my position when I retire. Check here for how to apply at ESA: https://www.esa.int/About_Us/Careers_at_ESA/Frequently_asked_questions2#HR1|
|How much is too much?||DVK: 42 again|
|Are you aware of any asteroids that are theoretically within our reach, or will be within our reach at some point, that are carrying a large quantity of shungite? If you're not aware, shungite is like a 2 billion year old like, rock stone that protects against frequencies and unwanted frequencies that may be traveling in the air. I bought a whole bunch of the stuff. Put them around the la casa. Little pyramids, stuff like that.||DVK: If I remember my geology properly, Shungite forms in water sedimental deposits. This requires liquid water, i.e. a larger planet. So I don't think there is a high chance to see that on asteroids.|
The Trump administration’s Dec. 15 deadline for new tariffs on China looms large, and while most strategists expect them to be delayed while talks continue, they don’t rule out the unexpected.
“That’s the biggest thing in the room next week. I don’t think he’s going to raise them. I think they’ll find a reason,” said James Pauslen, chief investment strategist at Leuthold Group. But Paulsen said President Donald Trump’s unpredictable nature makes it really impossible to tell what will happen as the deadline nears.
“He’s the one off you’re never sure about. It’s not just tariffs. It could be damn near anything,” Paulsen said. “I think he goes out of his way to be a wild card.”
Just in the past week, Trump said he would put new tariffs on Brazil, Argentina and France. He rattled markets when he said he could wait until after the election for a trade deal with China.
Once dubbing himself “tariff man,” Trump reminded markets that he sees tariffs as a way of getting what he wants from an opponent, and traders were reminded tariffs may be around for a long time.
Trade certainly could be the most important event for markets in the week ahead, which also includes a Fed interest rate decision Wednesday and the U.K.’s election that could set the course for Brexit. If there’s no China deal, that could beat up stocks, send Treasury yields lower and send investors into other safe havens.
When Fed officials meet this week, they are not expected to change interest rates, but they are likely to discuss whether they believe their repo operations to drive liquidity in the short-term funding market are running smoothly, ahead of year end. Economic reports in the coming week include CPI inflation Wednesday, which could be an important input for the Fed.
Punt, but no deal As of Friday, the White House did not appear any closer to striking a deal with China, though officials say talks are going fine. Back in August, Trump said if there is no deal, Dec. 15 is the date for a new wave of tariffs on $156 billion in Chinese goods, including cell phones, toys and lap top computers.
Dan Clifton, head of policy research at Strategas, said it seems like a low probability there will be a deal in the coming week. “What the market is focused on right now is whether there’s going to be tariffs that to into effect on Dec. 15, or not. It’s being rated pretty binary,” said Clifton. “I think what’s happening here and the actions by China overnight looks like we’re setting up for a kick.”
China removed some tariffs from U.S. agricultural products Friday, and administration officials have been talking about discussions going fine.
Clifton said if tariffs are put on hold, it’s unclear for how long. “Those are going to be larger questions that have to be answered. This is really now about politics. Is it a better idea for the president to cut a deal without major structural reforms, or should he walk away? That’s the larger debate that has to happen after Dec. 15,” Clifton said. “I’m getting worried that some in the administration... they’re leaning toward no deal category.”
Clifton said Trump’s approval rating falls when the trade wars heat up, so that may motivate him to complete the deal with China even if he doesn’t get everything he wants.
Michael Schumacher, director of rates strategy at Wells Fargo, said his base case is for a trade deal to be signed in the next couple of months, but even so, he said he can’t entirely rule out another outcome. It would make sense for tariffs to be put on hold while talks continue.
“The tweeter-in-chief controls that one, ” said Schumacher. “That’s anybody’s guess...I wouldn’t be at all surprised if he suspends it for a few weeks. If he doesn’t, that’s a pretty unpleasant result. That’s risk off. That’s pretty clear.”
Because the next group of tariffs would be on consumer goods, economists fear they could hit the economy through the consumer, the strongest and largest engine behind economic growth.
Fed ahead The Fed has moved to the sidelines and says it is monitoring economic data before deciding its next move. Friday’s strong November jobs report, with 266,000 jobs added, reinforces the Fed’s decision to move to neutral for now.
So the most important headlines from its meeting this week could be about the repo market, basically the plumbing for the financial system where financial institutions fund themselves. Interest rates in that somewhat obscure market spiked in September. Market pros said the issue was a cash crunch in the short term lending market, made better when the Fed started repo operations.
The Fed now has multiple operations running over year end, and Schumacher said it has latitude to do more. Strategists expect there to be more pressure on the repo market as banks rein in operations to spruce up their balance sheets at year end.
“No one is going to come to the Fed and say you did too much in the year-end funding,” said Schumacher. “If repo happens to spike somewhat on one day, the Fed is going to hammer it the next day.”
Paulsen said the markets will be attuned to this week’s inflation numbers. Consumer inflation, the CPI is reported on Wednesday and producer prices are Thursday.
A pickup in inflation of any significance is one thing that could pull the Fed from the sidelines, and prod it to consider a rate hike.
“I think the inflation reports might start to get a little attention. Given the jobs numbers, the employment rate, growth picking up a little bit and a better tone in manufacturing. I do think if you get some hot CPI number, I don’t know if the Fed can ignore it,” he said. “Core CPI is 2.3%.” He said it would get noticed if it jumped to 2.5% or better.
The Fed’s inflation target is 2% but its preferred measure is the PCE inflation, and that remains under 2%.
Stocks were sharply higher Friday but ended the past week flattish. The S&P 500 was slightly higher, up 0.2% at 3,145, and the Dow was down 0.1% at 28,015. The Nasdaq was 0.1% lower, ending the week at 8,656.
It has been a rough start to the most wonderful month of them all, with the S&P 500 Index down each of the first two days of December. Don’t stop believing just yet, though.
Everyone knows December has usually been a good month for stocks, but what happened last year is still fresh in the minds of many investors. The S&P 500 fell 9.1% in December 2018 for the worst December since 1931. That sounds really bad, until you realize stocks fell 30% in September 1931, but we digress.
One major difference between now and last year is how well the global equities have been performing. Heading into December 2018, the S&P 500 was up 3.2% year to date, but markets outside of the United States were already firmly in the red, with many down double digits.
“We don’t think stocks are on the verge of another massive December sell off,” said LPL Financial Senior Market Strategist Ryan Detrick. “If my Cincinnati Bengals can win a game, anything is possible. However, we are quite encouraged by the overall participation we are seeing from various global stock markets this year versus last year, when the United States was about the only market in the green heading into December.”
Stocks have also overcome volatile starts to December recently. The S&P 500 was down four days in a row to start 2013 and 2017, but the gauge still managed to gain 2.4% and 1%, respectively, in those years.
As the LPL Chart of the Day shows, December has been the second-best month of the year for stocks going back to 1950. It is worth noting that it was the best month of the year before last year’s massive drop. Stocks have historically been strong in pre-election years as well, and December has never been lower two times in a row during a pre-election year. Given stocks fell in December 2015, bulls could be smiling when this month is wrapped up.
Impeaching a President with the possibility of removal from office is by no means great for the country. However, it may not be so horrible for the stock market or investors if history is any guide. We first touched on this over two years ago here on the blog and now that much has transpired and the US House of Representatives is now proceeding with drafting articles of impeachment we figured it was a good time to revisit the history (albeit limited) of market behavior during presidential impeachment proceedings. The three charts below really tell the story.
During the Watergate scandal of Nixon’s second term the market suffered a major bear market from January 1973 to OctobeDecember 1974 with the Dow down 45.1%, S&P 500 down 48.2% and NASDAQ down 59.9%. Sure there were other factors that contributed to the bear market such as the Oil Embargo, Arab-Israeli War, collapse of the Bretton Woods system, high inflation and Watergate. However, shortly after Nixon resigned on August 9, 1974 the market reached the secular bear market low on October 3 for S&P and NASDAQ and December 6 for the Dow.
Leading up to the Clinton investigations and through his subsequent impeachment and the acquittal by the Senate the market was on a tear as one of the biggest bull markets in history raged on. After the 1994 midterm elections when the Republicans took back control of both houses of Congress the market remained on a 45 degree upward trajectory except for a few blips and the shortest bear market on record that lasted 45 days and bottomed on August 31, 1998.
Clinton was impeached in December 1998 and acquitted in February 1999 as the market continued higher throughout his second term. Sure there were other factors that contributed to the late-1990s bull-run such as the Dotcom Boom, the Information Revolution, millennial fervor and a booming global economy, but Clinton’s personal scandal had little negative impact on markets.
It remains to be seen of course what will happen with President Trump’s impeachment proceeding and how the world and markets react, but the market continues to march on. If the limited history of impeachment proceedings of a US President in modern times (no offense to our 17th President Andrew Johnson) is any guide, the market has bounced back after the last two impeachment proceedings and was higher a year later. Perhaps it will be better to buy any impeachment dip rather than sell it.
Historically, the first trading day of December, today, has a slightly bearish bias with S&P 500 advancing 34 times over the last 69 years (since 1950) with an average loss of 0.02%. Tomorrow, the second trading day of December however, has been stronger, up 52.2% of the time since 1950 with an average gain of 0.08% and the third day is better still, up 59.4% of the time.
Over the more recent 21-year period, December has opened with strength and gains over its first seven trading days before beginning to drift. By mid-month all five indices have surrendered any early-month gains, but shortly thereafter Santa usually visits sending the market higher until the last day of the month and the year when last minute selling, most likely for tax reasons, briefly interrupts the market’s rally.
Just when it was beginning to look like trade was heading in a positive direction, the wind changed direction again. Yesterday it was steel and aluminum tariffs on Brazil and Argentina and today a deal with China may not happen as soon as previously anticipated. The result was the worst first two trading days of December since last year and the sixth worst start since 1950 for S&P 500. DJIA and NASDAQ are eighth worst since 1950 and 1971, respectively.
However, historically past weakness in early December (losses over the first two trading days combined) were still followed by average gains for the remainder of the month the majority of the time. DJIA has advanced 74.19% of the time following losses over the first two trading days with an average gain for the remainder of December of 1.39%. S&P 500 was up 67.65% of the time with an average rest of month gain of 0.84%. NASDAQ is modestly softer advancing 61.11% of the time during the remainder of December with an average advance of 0.30%.
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lululemon athletica inc. (LULU) is confirmed to report earnings at approximately 4:05 PM ET on Wednesday, December 11, 2019. The consensus earnings estimate is $0.93 per share on revenue of $896.50 million and the Earnings Whisper ® number is $0.98 per share. Investor sentiment going into the company's earnings release has 73% expecting an earnings beat The company's guidance was for earnings of $0.90 to $0.92 per share on revenue of $880.00 million to $890.00 million. Consensus estimates are for year-over-year earnings growth of 24.00% with revenue increasing by 19.91%. Short interest has increased by 9.8% since the company's last earnings release while the stock has drifted higher by 16.0% from its open following the earnings release to be 26.0% above its 200 day moving average of $182.08. Overall earnings estimates have been revised higher since the company's last earnings release. On Friday, December 6, 2019 there was some notable buying of 927 contracts of the $260.00 call expiring on Friday, December 13, 2019. Option traders are pricing in a 8.3% move on earnings and the stock has averaged a 11.1% move in recent quarters.
Costco Wholesale Corp. (COST) is confirmed to report earnings at approximately 4:15 PM ET on Thursday, December 12, 2019. The consensus earnings estimate is $1.70 per share on revenue of $37.43 billion and the Earnings Whisper ® number is $1.74 per share. Investor sentiment going into the company's earnings release has 78% expecting an earnings beat. Consensus estimates are for year-over-year earnings growth of 5.59% with revenue increasing by 6.73%. Short interest has increased by 19.3% since the company's last earnings release while the stock has drifted higher by 2.5% from its open following the earnings release to be 10.3% above its 200 day moving average of $267.50. Overall earnings estimates have been revised higher since the company's last earnings release. On Tuesday, November 19, 2019 there was some notable buying of 916 contracts of the $265.00 put expiring on Friday, December 27, 2019. Option traders are pricing in a 3.7% move on earnings and the stock has averaged a 3.6% move in recent quarters.
Thor Industries, Inc. (THO) is confirmed to report earnings at approximately 6:45 AM ET on Monday, December 9, 2019. The consensus earnings estimate is $1.23 per share on revenue of $2.30 billion and the Earnings Whisper ® number is $1.30 per share. Investor sentiment going into the company's earnings release has 69% expecting an earnings beat. Consensus estimates are for earnings to decline year-over-year by 16.89% with revenue increasing by 30.98%. Short interest has increased by 48.1% since the company's last earnings release while the stock has drifted higher by 25.5% from its open following the earnings release to be 16.0% above its 200 day moving average of $58.44. Overall earnings estimates have been revised lower since the company's last earnings release. On Tuesday, December 3, 2019 there was some notable buying of 838 contracts of the $60.00 put expiring on Friday, December 20, 2019. Option traders are pricing in a 10.0% move on earnings and the stock has averaged a 7.6% move in recent quarters.
AutoZone, Inc. (AZO) is confirmed to report earnings at approximately 6:55 AM ET on Tuesday, December 10, 2019. The consensus earnings estimate is $13.69 per share on revenue of $2.76 billion and the Earnings Whisper ® number is $14.02 per share. Investor sentiment going into the company's earnings release has 76% expecting an earnings beat. Consensus estimates are for year-over-year earnings growth of 1.63% with revenue increasing by 4.48%. Short interest has decreased by 13.7% since the company's last earnings release while the stock has drifted higher by 1.1% from its open following the earnings release to be 8.9% above its 200 day moving average of $1,077.00. Overall earnings estimates have been revised lower since the company's last earnings release. Option traders are pricing in a 5.5% move on earnings and the stock has averaged a 5.6% move in recent quarters.
Adobe Inc. (ADBE) is confirmed to report earnings at approximately 4:05 PM ET on Thursday, December 12, 2019. The consensus earnings estimate is $2.26 per share on revenue of $2.97 billion and the Earnings Whisper ® number is $2.30 per share. Investor sentiment going into the company's earnings release has 74% expecting an earnings beat The company's guidance was for earnings of approximately $2.25 per share. Consensus estimates are for year-over-year earnings growth of 23.50% with revenue increasing by 20.51%. Short interest has increased by 44.6% since the company's last earnings release while the stock has drifted higher by 11.2% from its open following the earnings release to be 9.1% above its 200 day moving average of $280.60. Overall earnings estimates have been revised higher since the company's last earnings release. On Monday, November 25, 2019 there was some notable buying of 505 contracts of the $340.00 call expiring on Friday, December 20, 2019. Option traders are pricing in a 3.9% move on earnings and the stock has averaged a 3.8% move in recent quarters.
Broadcom Limited (AVGO) is confirmed to report earnings at approximately 4:15 PM ET on Thursday, December 12, 2019. The consensus earnings estimate is $5.36 per share on revenue of $5.76 billion and the Earnings Whisper ® number is $5.47 per share. Investor sentiment going into the company's earnings release has 69% expecting an earnings beat. Consensus estimates are for earnings to decline year-over-year by 7.27% with revenue increasing by 5.80%. Short interest has increased by 22.8% since the company's last earnings release while the stock has drifted higher by 6.2% from its open following the earnings release to be 9.7% above its 200 day moving average of $288.21. Overall earnings estimates have been revised lower since the company's last earnings release. On Thursday, December 5, 2019 there was some notable buying of 625 contracts of the $135.00 call expiring on Friday, January 15, 2021. Option traders are pricing in a 5.2% move on earnings and the stock has averaged a 4.7% move in recent quarters.
Ciena Corporation (CIEN) is confirmed to report earnings at approximately 7:00 AM ET on Thursday, December 12, 2019. The consensus earnings estimate is $0.66 per share on revenue of $964.80 million and the Earnings Whisper ® number is $0.67 per share. Investor sentiment going into the company's earnings release has 72% expecting an earnings beat The company's guidance was for revenue of $945.00 million to $975.00 million. Consensus estimates are for year-over-year earnings growth of 26.92% with revenue increasing by 7.28%. Short interest has increased by 66.6% since the company's last earnings release while the stock has drifted lower by 9.5% from its open following the earnings release to be 11.0% below its 200 day moving average of $39.32. Overall earnings estimates have been revised higher since the company's last earnings release. On Friday, December 6, 2019 there was some notable buying of 1,156 contracts of the $36.00 put expiring on Friday, December 13, 2019. Option traders are pricing in a 9.0% move on earnings and the stock has averaged a 10.1% move in recent quarters.
MongoDB, Inc. (MDB) is confirmed to report earnings at approximately 4:05 PM ET on Monday, December 9, 2019. The consensus estimate is for a loss of $0.28 per share on revenue of $99.73 million and the Earnings Whisper ® number is ($0.26) per share. Investor sentiment going into the company's earnings release has 63% expecting an earnings beat The company's guidance was for a loss of $0.29 to $0.27 per share on revenue of $98.00 million to $100.00 million. Consensus estimates are for year-over-year earnings growth of 15.15% with revenue increasing by 53.47%. Short interest has increased by 15.2% since the company's last earnings release while the stock has drifted lower by 16.3% from its open following the earnings release to be 5.1% below its 200 day moving average of $138.19. Overall earnings estimates have been revised lower since the company's last earnings release. On Tuesday, November 19, 2019 there was some notable buying of 970 contracts of the $210.00 call expiring on Friday, December 20, 2019. Option traders are pricing in a 10.1% move on earnings and the stock has averaged a 8.7% move in recent quarters.
Chewy, Inc. (CHWY) is confirmed to report earnings at approximately 4:10 PM ET on Monday, December 9, 2019. The consensus estimate is for a loss of $0.16 per share on revenue of $1.21 billion and the Earnings Whisper ® number is ($0.15) per share. Investor sentiment going into the company's earnings release has 57% expecting an earnings beat. Short interest has increased by 40.7% since the company's last earnings release while the stock has drifted lower by 14.6% from its open following the earnings release. Overall earnings estimates have been revised lower since the company's last earnings release. The stock has averaged a 6.4% move on earnings in recent quarters.
Stitch Fix, Inc. (SFIX) is confirmed to report earnings at approximately 4:05 PM ET on Monday, December 9, 2019. The consensus estimate is for a loss of $0.06 per share on revenue of $441.04 million and the Earnings Whisper ® number is ($0.04) per share. Investor sentiment going into the company's earnings release has 69% expecting an earnings beat The company's guidance was for revenue of $438.00 million to $442.00 million. Consensus estimates are for earnings to decline year-over-year by 160.00% with revenue increasing by 20.43%. Short interest has increased by 30.9% since the company's last earnings release while the stock has drifted higher by 41.7% from its open following the earnings release to be 2.4% below its 200 day moving average of $24.69. Overall earnings estimates have been revised lower since the company's last earnings release. On Thursday, November 21, 2019 there was some notable buying of 1,000 contracts of the $13.00 put expiring on Friday, January 17, 2020. Option traders are pricing in a 20.0% move on earnings and the stock has averaged a 18.9% move in recent quarters.
Created by SirKilljoy, you can find it here. Note: As of 6/2/19, Outdated. Searching for updated file. Send if you have one!
Quick-Reference Ammo Chart
Absolutely fantastic resource. You can visit them here.
Huge collection of all the keys in the game. These are also on the wiki, but this page has them all on one page, and tries to inform the user if the key is worth keeping or using.
Map Keys and You
Pretty self explanatory. Also includes a Key guide and a Mod guide.
Tarkov's Weapon Compatibility Guide
Courtesy of Veritas (Send me his reddit username?), It's located here. (Open in new tab.)
HUGE Reference Bible by Veritas
To see what extracts are available to you, double tap 'O' to show raid time and your exfils. If it has a ???? it might not be open.You can load Raids in an OFFLINE status, which allows you to explore the map or practice against AI without losing gear.
DISCLAIMER: Labs, like much of Tarkov, is under constant development, so issues may be fixed or created without warning. Always check patch notes!
Experience Farming on LabsLabs is perhaps the best place to farm experience on the current patch.
Changes coming to LabsDisclaimer: I am not a BSG developer or employee. This is what I have seen on this subreddit and heard elsewhere. Some might be purely rumor, but other points are confirmed by Nikita.
Health ItemsTarkov features many health items - 'Aid' items, which can be used to restore your characters health and to fix ailments or injuries he receives as the result of combat or mishaps. The two most important health conditions to consider are bloodloss and fractures, which have both been covered above. Some food items may have ancillary effects, such as losing hydration.
Medical Injectors are not covered here. Essentially, they are powerful but niche items with strong side effects. Most recommended use is to store them in your Secure Container and sell them either on the Flea Market or to Therapist for roubles.To be able to Hotkey a medicine item, they must be in a tactical rig or your pockets.