Stumbling upon a meteorite might seem like a once-in-a-lifetime event, but it’s not as uncommon as you might think. What’s ...

A machine learning framework can distinguish molecules made by biological processes from those formed through non-biological ...

DAKAR, Senegal — It’s the largest piece of Mars ever found on Earth — a 54-pound (25-kilogram) meteorite that fetched more than $5 million at a New York auction last month, setting a world record. But ...