This artist’s concept depicts one of the solar system’s inner planets slamming into Earth after being nudged on a collision course by a passing star. Such a world-shattering cataclysm is extremely ...

Thanks to Einstein’s relativity, time flows differently on Mars than on Earth. NIST scientists have now nailed down the ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: NASA / JPL-Caltech Mars doesn’t have magnetic poles like Earth does, but that doesn’t ...

A single metallic boulder sitting in an ancient Martian riverbed is forcing scientists to rethink what they thought they knew about the Red Planet. The rock, an apparent interplanetary visitor, is not ...

A mysterious interstellar comet — just the third such object ever confirmed to have entered our solar system — streaked past Mars last week. A spacecraft in orbit around the red planet had a front-row ...