I have been out of town for the last week so I'm doing a little bit of catch up. While I was gone, the Mars rover Opportunity made an amazing discovery. It found what is probably a meteorite on Mars.
Whenever I have the chance, I love to examine meteorites. The fact that you are holding a rock from space is a really incredible experience. I can't imagine how the scientists at NASA felt when they saw this rock just sitting there. This rock is being called "Block Island." The pitting you can see is very similar to how meteorites here on earth look. Opportunity is planning on using its X-ray spectrometer to see what this rock is made out of and confirm that it is a meteorite.
Images courtesy NASA/JPL