NASA’s Galileo spacecraft, which was designed to study the large, gaseous planet Jupiter and its moons, first caught hints of ...

Plus: Stopping asteroids from hitting Earth, solving climate change with fertilizer and building strength by eating grapes.

Callisto, one of Jupiter’s largest moons, looks like a boring, crater-filled world. It doesn’t seem to have much going on ...

Your guide to the Giant Red Spot, those large ocean-bearing moons and the conditions which could support life on the planet ...

Two planets stand side by side as the evening twilight continues to delight and colorful stars shine in the sky this week.

The presence of an ocean leaves open the possibility that it could host life. Another nearby moon, Europa, is also considered ...