This Rosy Stone Spotted in the Sahara Turned Out to Be a 4.1-Billion-Year-Old Meteorite From Mars, One of the Oldest Ever Found
Martian samples this old are extremely rare and offer clues about the Red Planet's youth. This meteorite further hints that our celestial neighbor was once a watery world, suggesting it could've had the conditions to host life
We haven't written up this one. Smithsonian has the full story — the link below goes straight to it.