Stardust Analysis Results, initial results for comet Wild 2, including organic compounds |
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Stardust Analysis Results, initial results for comet Wild 2, including organic compounds |
 May 16 2006, 03:09 PM
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#46
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 Senior Member  Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430  |
http://stardust.jpl.nasa.gov/news/status/060512.html
Stardust Analysis Update Dr. Donald Brownlee Stardust Principal Investigator May 12, 2006 [Group photo of Stardust science team at Timber Grove Inn near San Francisco, California] The Stardust Preliminary Examination Team (PET) is now in the second half of the six month period to complete the initial characterization of the returned comet samples. .... (Editied. Hardly any point in posting the link if you're going to copy and paste the whole damn press release!) -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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Apr 6 2011, 04:13 PM
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#47
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 Member Group: Members Posts: 813 Joined: 29-December 05 From: NE Oh, USA Member No.: 627 |
Frozen Comet Had a Watery Past
http://uanews.org/node/39041 "In our samples, we found minerals that formed in the presence of liquid water," Berger said. "At some point in its history, the comet must have harbored pockets of water." "What we found makes us look at comets in a different way," Lauretta said. "We think they should be viewed as individual entities with their own unique geologic history." That is if the minerals they found formed on the comet.... Pretty cool. Craig |
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Aug 15 2014, 02:38 PM
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#48
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Member Group: Members Posts: 540 Joined: 17-November 05 From: Oklahoma Member No.: 557 |
A report out from JPL on the interstellar dust analysis:
Interstellar particles from Stardust Quote: "Seven rare, microscopic interstellar dust particles that date to the beginnings of the solar system are among the samples collected by scientists who have been studying the payload from NASA's Stardust spacecraft ..." [Emphasis added] Apparently the JPL press office is so used to opening Stardust updates with the phrase "beginnings of the solar system" that they failed to notice that in this case interstellar dust has nothing to do with the solar system. Note: Ooops. Didn't notice Explorer1 already posted this press release on another Stardust topic. |
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Aug 15 2014, 04:33 PM
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#49
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 Senior Member Group: Members Posts: 2079 Joined: 13-February 10 From: Ontario Member No.: 5221 |
That's fine; analysis is more appropriate than the EPOXI thread. Maybe a mod can move mine?
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Aug 15 2014, 06:19 PM
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#50
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 Member Group: Members Posts: 334 Joined: 11-December 12 From: The home of Corby Crater (Corby-England) Member No.: 6783 |
I read the piece linked to and it included the following phrase.
'The particles would be the first confirmed samples of contemporary interstellar dust.' I was unsure what 'contemporary, meant in this context. |
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Aug 15 2014, 06:21 PM
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#51
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Solar System Cartographer Group: Members Posts: 10146 Joined: 5-April 05 From: Canada Member No.: 227 |
Contemporary = not in ocean sediments ?
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Aug 20 2014, 04:31 AM
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#52
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Member Group: Members Posts: 540 Joined: 17-November 05 From: Oklahoma Member No.: 557 |
According to this report, the theory is these grains can't be more than 100 million years old:
Seven tiny grains Quote: "This dust is relatively new, since the lifetime of interstellar dust is only 50 to 100 million years, so we are sampling our contemporary galaxy," said Butterworth. So I guess one way of looking at it is that Tyrannosaurus Rex is contemporary. Trilobites ... not so much so. |
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