Scientists have identified several caves carved by water and they may have held or have evidence of extraterrestrial life.

The new explanation for a majority of the Red Planet’s dark streaks overturned earlier assumptions of water causing them, ...

NASA’s InSight mission delivered the first direct data from beneath the Martian surface, revealing a world far more active ...

A ridiculous but instructive thought experiment involving deep time, plate tectonics, erosion and the slow death of the sun ...

Had one hoped to leave a time capsule for today’s Bostonians in the Permian period 250 million years ago, much less the Pliocene epoch four million years ago , they would have been completely, utterly ...