NASA’s newly launched IMAP mission is set to tell us more about the boundary between our Solar System and interstellar space ...

Astronomers found an interstellar "tunnel" - a cosmic channel that connects our solar system to distant stars, according to a ...

It was long thought, up until recently, that asteroids and comets delivered Earth's oceans during the early Solar System.

For a long time, scientists assumed that Earth's water was delivered by asteroids and comets billions of years ago. This coincided with the Late Heavy Bombardment (ca. 4.1 to 3.8 billion years ago), a ...

Earth and its neighbors orbit the sun on a relatively flat plane. But what's below this plane, and is anythign below the ...

Twin siblings, twin peaks, twin cities, twin planets... Two earths, one solar system. How would that work?

Researchers uncover how Mars affects Earth’s orbit, offering new insight into the planetary forces behind ice ages.