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?