science
A dark rock picked off the gravel plains of Oman turned out to be a piece of Mars, blasted off the planet by an impact. It now rides aboard Perseverance as a calibration target, back on the world it came from
> A 300,000-year-old Martian meteorite discovered in Oman has completed the most extraordinary round trip in planetary science: after being blasted off Mars by an asteroid impact, it fell to Earth, wa...