Through this photograph, Pettit showed how a fisheye lens can create an unusual view of Earth's auroras.

The Moon slows down the Earth's rotation a little every year. What would happen if it stopped completely? An astrophysicist ...

Discover 15 facts about strange planet Earth, from underwater waterfalls and glowing seas to moving rocks and unusual ...

Researchers are particularly interested in planets orbiting orange K-dwarf stars, which could support life for billions of ...

Astronomers watched water clouds grow thicker and thinner on a world trillions of miles away. It's familiar weather in a ...

A nearby star system with two suns could host an Earth-sized planet capable of supporting life, a new research suggests -- ...

Earth is called the Blue Planet because 71% of its surface is covered with water, giving it a blue glow when seen from space. Learn why Earth looks blue, how water supports life, and detailed facts ...

On a clear night, it dominates the sky, bright enough to cast shadows and large enough for dark patches and surface features to be seen without any equipment. It appears close, almost familiar. For ...

Larger than Earth, covered in shallow seas and orbiting long-lived orange stars, these hypothetical worlds could provide ...

A potential Tatooine -like planet from Star Wars of Earth's size in a nearby binary star system can hold liquid water and ...