The sheer number of objects suggests scientists will soon have to grapple with what counts as a moon versus what’s just a ...

The discovery points to what astronomers have thought for decades, that Saturn's rings were caused by a massive collision about 100 million years ago.

The ringed gas giant Saturn has officially replaced Jupiter as the planet in our solar system with the most moons. The ...

Reactions are still coming from President Trump's first address to Congress since returning to office. But some policy moves ...