Group items tagged meteorite - Advanced Concepts Team

Meteorite Crashes In Russia, Panic Spreads (Updating) - 5 views

gizmodo.com/...rashes-in-russia-panic-spreads

shared by LeopoldS on 15 Feb 13 - No Cached

Joris _ on 15 Feb 13

Latest update: the European Space Agency says their experts "confirm there is no link between the meteor incidents in Russia and asteroid 2012DA14 flyby tonight". How did they find this? As they did not see this one coming, how could they come to that conclusion that early!

<div class="cArrow"> </div><div class="cContentInner">Latest update: the European Space Agency says their experts "confirm there is no link between the meteor incidents in Russia and asteroid 2012DA14 flyby tonight". How did they find this? As they did not see this one coming, how could they come to that conclusion that early!</div>

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johannessimon81 on 15 Feb 13

As you can see from the videos of this meteorite it is coming in from an east to south-east direction (i.e. the direction of the sunrise, more or less). 2012DA14 is coming from due south as you can see here: http://www.wired.com/wiredscience/2013/02/how-to-watch-asteroid-2012-da14/ So the two objects seem to be coming from different directions - at least that would be my explanation.

<div class="cArrow"> </div><div class="cContentInner">As you can see from the videos of this meteorite it is coming in from an east to south-east direction (i.e. the direction of the sunrise, more or less). 2012DA14 is coming from due south as you can see here: <a href="http://www.wired.com/wiredscience/2013/02/how-to-watch-asteroid-2012-da14/" rel="nofollow" target="_blank">http://www.wired.com/wiredscience/2013/02/how-to-watch-asteroid-2012-da14/</a> So the two objects seem to be coming from different directions - at least that would be my explanation.</div>

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Joris _ on 15 Feb 13

My point is, that if you want to come to such a conclusion (that it is not rubble) you need to be able to construct back the orbits of both objects. 2012DA14 has been observed for one year only, but it is well enough. When the meteor has been observed for the first time, such that we knew its orbit? has it been observed before? if yes, why the impact has not been predicted?

<div class="cArrow"> </div><div class="cContentInner">My point is, that if you want to come to such a conclusion (that it is not rubble) you need to be able to construct back the orbits of both objects. 2012DA14 has been observed for one year only, but it is well enough. When the meteor has been observed for the first time, such that we knew its orbit? has it been observed before? if yes, why the impact has not been predicted?</div>

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johannessimon81 on 15 Feb 13

If you can show that they come from different directions you know that they are not associated, even if you don't reconstruct their orbits.

<div class="cArrow"> </div><div class="cContentInner">If you can show that they come from different directions you know that they are not associated, even if you don't reconstruct their orbits.</div>

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Joris _ on 15 Feb 13

I don't think so. If both objects were part of the same, they would be on different but intersecting orbits anyway, hence different directions. Anyway, I am not knowledgeable in atmospheric entry ... But, with so few information about the object, I am surprised they are 100% certain it is not related to DA14. I think science requires more cautions ... With only the direction they are 100% sure, while the probability of such event is itself extremely small, I am amazed... They can't even predict with 100% certainty where a space debris will fall... plus, nobody consider the object being part of a bigger one that broke up during early entry (which has not been observed) ... so many uncertainties and possible hypothesis... and i am not the only one :) http://www.infowars.com/russian-meteor-linked-to-da14-asteroid/

<div class="cArrow"> </div><div class="cContentInner">I don't think so. If both objects were part of the same, they would be on different but intersecting orbits anyway, hence different directions. Anyway, I am not knowledgeable in atmospheric entry ... But, with so few information about the object, I am surprised they are 100% certain it is not related to DA14. I think science requires more cautions ... With only the direction they are 100% sure, while the probability of such event is itself extremely small, I am amazed... They can't even predict with 100% certainty where a space debris will fall... plus, nobody consider the object being part of a bigger one that broke up during early entry (which has not been observed) ... so many uncertainties and possible hypothesis... and i am not the only one :) <a href="http://www.infowars.com/russian-meteor-linked-to-da14-asteroid/" rel="nofollow" target="_blank">http://www.infowars.com/russian-meteor-linked-to-da14-asteroid/</a></div>

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LeopoldS on 17 Feb 13

was not that evident to me also but apparently with the right understanding it was quite clear; was amazed also how quickly NASA has published the likely trajectory of the russian object - have a look at it: quite evident that these are not coming from the same body

<div class="cArrow"> </div><div class="cContentInner">was not that evident to me also but apparently with the right understanding it was quite clear; was amazed also how quickly NASA has published the likely trajectory of the russian object - have a look at it: quite evident that these are not coming from the same body</div>

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Joris _ on 17 Feb 13

yes, now i get my 100% certainty with the reconstructed orbits nothing else (http://wiki.nasa.gov/cm/blog/Watch%20the%20Skies/posts/post_1361037562855.html) ... I still think that esa anouncemement was highly premature but with a high probability of being right...

<div class="cArrow"> </div><div class="cContentInner">yes, now i get my 100% certainty with the reconstructed orbits nothing else (<a href="http://wiki.nasa.gov/cm/blog/Watch%20the%20Skies/posts/post_1361037562855.html" rel="nofollow" target="_blank">http://wiki.nasa.gov/cm/blog/Watch%20the%20Skies/posts/post_1361037562855.html</a>) ... I still think that esa anouncemement was highly premature but with a high probability of being right...</div>

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Ma Ru on 26 Feb 13

Some more results on the topic (link to an arxiv article inside): http://www.bbc.co.uk/news/science-environment-21579422

<div class="cArrow"> </div><div class="cContentInner">Some more results on the topic (link to an arxiv article inside): <a href="http://www.bbc.co.uk/news/science-environment-21579422" rel="nofollow" target="_blank">http://www.bbc.co.uk/news/science-environment-21579422</a></div>

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The Amazing Trajectories of Life-Bearing Meteorites from Earth - Technology Review - 0 views

www.technologyreview.com/...27720

BIO life meteorite microbes

shared by Luís F. Simões on 11 Apr 12 - No Cached

That raises another interesting question: how quickly could life-bearing ejecta from Earth (or anywhere else) seed the entire galaxy? Hara and co calculate that it would take some 10^12 years for ejecta to spread through a volume of space the size of the Milky Way. But since our galaxy is only 10^10 years old, a single ejection event could not have done the trick. However, they say that if life evolved at 25 different sites in the galaxy 10^10 years ago, then the combined ejecta from these places would now fill the Milky Way.
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Ref: arxiv.org/abs/1204.1719: Transfer of Life-Bearing Meteorites from Earth to Other Planets
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Norwegian Skydiver Almost Gets Hit by Falling Meteor - and Captures it on Film - 1 views

www.universetoday.com/...meteor-and-captures-it-on-film

NEO meteorite

shared by LeopoldS on 10 Apr 14 - No Cached

LeopoldS on 10 Apr 14

apparently first time that somebody filmed a meteorite falling after the luminous phase .... impressive pics

<div class="cArrow"> </div><div class="cContentInner">apparently first time that somebody filmed a meteorite falling after the luminous phase .... impressive pics</div>

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Luís F. Simões on 10 Apr 14

I've seen someone suggest it could have been a rock that ended up inside the parachute bag when it was folded, and then fell when the parachute was deployed.

<div class="cArrow"> </div><div class="cContentInner">I've seen someone suggest it could have been a rock that ended up inside the parachute bag when it was folded, and then fell when the parachute was deployed.</div>

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Vitamin B3 might have been made in space, delivered to Earth by meteorites -- ScienceDaily - 0 views

www.sciencedaily.com/...140417191742.htm

BIO science space

shared by Tom Gheysens on 22 Apr 14 - No Cached

Tom Gheysens on 22 Apr 14

Ancient Earth might have had an extraterrestrial supply of vitamin B3 delivered by carbon-rich meteorites, according to a new analysis. The result supports a theory that the origin of life may have been assisted by a supply of key molecules created in space and brought to Earth by comet and meteor impacts.

<div class="cArrow"> </div><div class="cContentInner">Ancient Earth might have had an extraterrestrial supply of vitamin B3 delivered by carbon-rich meteorites, according to a new analysis. The result supports a theory that the origin of life may have been assisted by a supply of key molecules created in space and brought to Earth by comet and meteor impacts.</div>

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APOD: 2008 November 25 - Fireball Over Edmonton - 0 views

apod.nasa.gov/ap081125.html

astronomy meteorite

shared by pacome delva on 11 Jun 09 - Cached

pacome delva liked it

pacome delva on 11 Jun 09

Around 40 000 tons a year of meteorite falls on Earth. Be lucky !!!

<div class="cArrow"> </div><div class="cContentInner">Around 40 000 tons a year of meteorite falls on Earth. Be lucky !!!</div>

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New Mars Meteorite Contains 10 Times More Water Than Previous Finds - 1 views

www.wired.com/...water-rich-mars-meteorite

science space

shared by johannessimon81 on 04 Jan 13 - No Cached

Investigating the contribution of methane produced by ablating micrometeorites to the a... - 1 views

www.sciencedirect.com/science

shared by Christos Ampatzis on 10 Dec 09 - No Cached

Christos Ampatzis on 10 Dec 09

title speaks for itself - so if it's not meteorites to blame, what is it?

<div class="cArrow"> </div><div class="cContentInner">title speaks for itself - so if it's not meteorites to blame, what is it?</div>

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Nicholas Lan on 10 Dec 09

link doesn't work for me

<div class="cArrow"> </div><div class="cContentInner">link doesn't work for me</div>

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A meteorite hit the moon during yesterday's total lunar eclipse | New Scientist - 3 views

www.newscientist.com/...yesterdays-total-lunar-eclipse

space fun

shared by Marcus Maertens on 23 Jan 19 - No Cached

Marcus Maertens on 23 Jan 19

There goes your moon base...

<div class="cArrow"> </div><div class="cContentInner">There goes your moon base...</div>

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Meteorites pummel the Moon far more than expected : Nature News & Comment - 1 views

www.nature.com/...far-more-than-expected-1.20777

moon space

shared by jaihobah on 14 Oct 16 - No Cached

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Science on Mars and Mars on Science - 0 views

news.sciencemag.org/...-mars-rover-quest-ancient-life

chemistry geology BIO planetary Mars

shared by Athanasia Nikolaou on 09 Dec 13 - No Cached

Thijs Versloot liked it

Athanasia Nikolaou on 09 Dec 13

Some sort of organic carbon has been detected by the sampling of Curiosity; the contamination source was isolated and the signal persists. The scientists suggest as a source meteorites transporting interstellar matter, or maybe some sort of ancient life whose biomass production only survived cosmic radiation as it was buried underground. a big deal: six relevant articles were published simultaneously online: http://www.sciencemag.org/site/extra/curiosity/index.xhtml?utm_content=&utm_medium=Facebook&utm_campaign=Science&utm_source=shortener

<div class="cArrow"> </div><div class="cContentInner">Some sort of organic carbon has been detected by the sampling of Curiosity; the contamination source was isolated and the signal persists. The scientists suggest as a source meteorites transporting interstellar matter, or maybe some sort of ancient life whose biomass production only survived cosmic radiation as it was buried underground. a big deal: six relevant articles were published simultaneously online: <a href="http://www.sciencemag.org/site/extra/curiosity/index.xhtml?utm_content=&utm_medium=Facebook&utm_campaign=Science&utm_source=shortener" rel="nofollow" target="_blank">http://www.sciencemag.org/site/extra/curiosity/index.xhtml?utm_content=&utm_medium=Facebook&utm_campaign=Science&utm_source=shortener</a></div>

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Evidence of life on Mars lurks beneath surface of meteorite, Nasa experts claim - Times... - 1 views

www.timesonline.co.uk/...article6934078.ece

shared by Christos Ampatzis on 27 Nov 09 - Cached

Christos Ampatzis on 27 Nov 09

Is there life on Mars? - We should try to compress those images!

<div class="cArrow"> </div><div class="cContentInner">Is there life on Mars? - We should try to compress those images! </div>

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Francesco Biscani on 29 Nov 09

"Is there life on Mars?" Yes, mostly on Saturday night...

<div class="cArrow"> </div><div class="cContentInner">"Is there life on Mars?" Yes, mostly on Saturday night...</div>

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Almost-close encounter: Meteorite hits Lorton doctor's office - washingtonpost.com - 3 views

www.washingtonpost.com/...AR2010012004767.html

NEO

shared by Joris _ on 22 Jan 10 - Cached

LeopoldS liked it

Proof of Martians 'to come this year': Scientific American - 0 views

www.scientificamerican.com/article.cfm

bio

shared by Francesco Biscani on 15 Jan 10 - Cached

David McKay, chief of astrobiology at NASA's Johnson Space Centre in Houston, says powerful new microscopes and other instruments will establish whether features in martian meteorites are alien fossils.
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14-Jähriger überlebt Meteoriteneinschlag - Webmix - derStandard.at/Web - 0 views

derstandard.at/...-ueberlebt-Meteoriteneinschlag

NEO asteroids meteorite

shared by LeopoldS on 13 Jun 09 - Cached

LeopoldS on 13 Jun 09

sorry for the german language ... nice story ... true??

<div class="cArrow"> </div><div class="cContentInner">sorry for the german language ... nice story ... true??</div>

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