Researchers are watching the most active volcano in the Pacific Northwest and now say that the volcano is swelling up like a balloon full of lava.

Was Mars a friendly planet for water, even life, in its ancient past? Huge channel networks run across its surface. Rocks ...

A reappraisal of decades-old data suggests that strange circular formations on Venus could be volcanic “rings of fire” ...

Mountains rise, volcanoes spew, and Earth itself quakes as the crust constantly remakes itself in the ceaseless cycle of ...

The finding could explain the long-running mystery of why the surfaces of the lunar near and far sides are so different.

NASA scientists said Wednesday that they’ve unearthed new secrets about the moon. Specifically, they’ve gotten a better look ...

By studying seismic waves, researchers have found a layer deep beneath the surface of Mars that could contain enough liquid ...