Space Crafts

There's a line where Earth's light and dark side meet called the terminator. But what exactly does that mean?

There are millions of giant rocks hurtling around the the solar system. So how do we know which ones are harmless and which ones to be afraid of?

Ever looked up at the night sky and wondered what kind of moon you're seeing? Here's how to tell them apart.

Can Earth survive if the sun becomes a red giant?

This mysterious region could teach us about the origin of the universe.

Eruptions on the sun spew fiery plasma into the solar system. Could this blazing fallout ever hit Earth?

Pluto was demoted nearly ten years ago, but some people are still hoping for redemption. Here's why the little planet got the boot.

These are the interstellar cannibals eating their way through our universe.

Could extraterrestrial life survive on Saturn's icy moon?

Cosmic dust is all around us, and nearly 60 tons of it falls to Earth every day. What can we learn about the origins of our universe from these mighty specks?