This Ancient Meteorite Hints at Mars' Warm, Wet Past
Ancient Martian meteorites are like time-capsules from the planet's past. They're delivered to us by impacts that launch them into space, where some of them find their way to Earth. One recently discovered meteorite found in the Sahara desert adds weight to the idea that Mars was once warm and wet, and possibly habitable.
We haven't written up this one. Universe Today has the full story — the link below goes straight to it.