Scientists think most of Saturn's rings are the leftover guts of moons that the planet's powerful ... it roughly 5,000 miles across. These two images highlight the different layers and densities ...

That’s possible because the moon’s orbital path around Earth is slightly elliptical. The super blue moon sets behind the Balmoral Clock in Edinburgh. (Photo by Jane Barlow/PA Images via ...

The space agency announced a $256.6 million contract with SpaceX to support the launch of the Dragonfly mission – a ...