Sahara rock appears to be first meteorite from Mars' crust - Los Angeles Times. Okay, we spent millions of dollars sending spacecraft to Mars, so they could walk around, zap rock formations, and run chemical tests - and now they tell us we have a Martian rock on Earth? Apparently, Mars has been sending its criminal rock elements to earth for over 2 Billion years. We have found 110 of them, and we are studying, poking, prodding, and running chemical tests on them. So, why did we go millions of miles to kill them? Science, it's about playing with rocks.