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Mars Sample Return - The Real Space Race
Henry Spencer wrote:
In article , ed kyle wrote: Who will be first to bring back a piece of Mars? Several meteorite collectors have already managed it. (And a sample you get from on or near the Martian surface actually isn't likely to be much less random than the meteorites. Geologists would be much more interested in bedrock from a known location than in random surface rubble of unknown origin. But that's going to take drilling, and not just a couple of meters down either.) Isn't there any places on Mars where the surface is bedrock? Alain Fournier |
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Mars Sample Return - The Real Space Race
One thing I have never seen addressed or maybe I missed it when there
was a big hub-bub about it, but... How do they *know* these meteorites actually came from Mars? Even if they have the right spectral and chemical composition, a rock is a rock isn't it? TIA, James On Sun, 16 Nov 2003 20:03:06 -0800 (PST), Alain Fournier wrote: Henry Spencer wrote: In article , ed kyle wrote: Who will be first to bring back a piece of Mars? Several meteorite collectors have already managed it. Isn't there any places on Mars where the surface is bedrock? |
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Mars Sample Return - The Real Space Race
James G wrote:
One thing I have never seen addressed or maybe I missed it when there was a big hub-bub about it, but... How do they *know* these meteorites actually came from Mars? Even if they have the right spectral and chemical composition, a rock is a rock isn't it? TIA, IIRC it was due to the composition of gases that were trapped in the rock, and which were a dead-on match for the Martian atmosphere as analyzed by the Viking landers. Pat |
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Mars Sample Return - The Real Space Race
In article , James G wrote:
One thing I have never seen addressed or maybe I missed it when there was a big hub-bub about it, but... How do they *know* these meteorites actually came from Mars? Even if they have the right spectral and chemical composition, a rock is a rock isn't it? An article on the SNC meteorites - the group of "known" Mars-originating meteorites - can be found at http://scienceworld.wolfram.com/astr...eteorites.html (They announced the identification of another one quite recently, IIRC - we're up to about 30. http://www.jpl.nasa.gov/snc/ has a list) -- -Andrew Gray |
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Mars Sample Return - The Real Space Race
Alain Fournier wrote in message .. .
Henry Spencer wrote: In article , ed kyle wrote: Who will be first to bring back a piece of Mars? Several meteorite collectors have already managed it. (And a sample you get from on or near the Martian surface actually isn't likely to be much less random than the meteorites. Geologists would be much more interested in bedrock from a known location than in random surface rubble of unknown origin. But that's going to take drilling, and not just a couple of meters down either.) Isn't there any places on Mars where the surface is bedrock? Yes there are many place bedrock is exposed. Many other types of rock and dust are of interest for geologists and folks designing spacesuit and other equipment for Mars. --Chris Vancil |
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