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**beneitpedro** · 02-09-2012, 02:23 PM

OK change of subject, just saw the news on TV that a meteorite has been found that is claimed to have come from Mars??
how do they know this? did someone see it come off. .............. OR ........... was it thrown into space from a collision with a quite biggish sort of meteorite and if so how would they know it was not part of the said Meteorite ??

Planetary researchers know the chemical composition of the surface deposits found on Mars. It is quite possible that a big meteor punched into Mars and the force of the impact hurled Martian materia into space, some of which then landed on Earth.

02-09-2012, 02:23 PM	#11
beneitpedro Join Date Oct 2005 Posts 488 Senior Member	OK change of subject, just saw the news on TV that a meteorite has been found that is claimed to have come from Mars?? how do they know this? did someone see it come off. .............. OR ........... was it thrown into space from a collision with a quite biggish sort of meteorite and if so how would they know it was not part of the said Meteorite ?? Planetary researchers know the chemical composition of the surface deposits found on Mars. It is quite possible that a big meteor punched into Mars and the force of the impact hurled Martian materia into space, some of which then landed on Earth.
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