Learn about the solar system in our new What If song. Explore planets, moons, and cosmic wonders through music and imagination.

And how could it happen? When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. This story is, of course, based in the realm of fiction, but could Earth ...

"The most convincing scenario is that most of the building blocks of Earth and Theia originated in the inner solar system.

Astronomers have found GJ 251 c, a rocky planet. It is a super-Earth located only 18 light-years away. This planet is in its star's habitable zone. This means liquid water could exist there. The ...

A large radio galaxy study finds our solar system moves faster than theory predicts, raising new questions about how matter ...

"The cosmos is also within us, we're made of star stuff," Carl Sagan famously stated on his original award-winning TV series Cosmos in 1980. These words encompassed a literal meaning and have stuck ...

In Liu Cixin's short story "The Wandering Earth (opens in new tab)" (first published in Chinese magazine Science Fiction World in July 2000), Cixin portrays a scenario in which the planet's leaders ...