The cold and remote planets originally earned their label of "ice giants" to contrast their interiors from those of Jupiter ...

In the first episode of "The Expanse" (which debuted 10 years ago this weekend), a spaceship makes the biggest meal of ...

Over the past century, astronomers have speculated about the existence of a mysterious 9th planet lurking in the outer ...

New models suggest Uranus and Neptune may hold far more rock than expected, raising questions about how these distant planets formed.

Astronomers have produced the first continuous, two-dimensional maps of the outer edge of the sun's atmosphere, a shifting, ...

Learn what the first maps of the sun's atmospheric boundary reveal about solar wind and its escape into space.

A new study has found that Earth's innermost core isn't a conventional solid, but rather in a 'superionic state'.

DC Studios has released the debut Supergirl movie, which has big Guardians of the Galaxy vibes and offers a very brief look ...

A Mars-size object called Theia smashed into Earth, and the debris coalesced into the moon. Now scientists believe they may have identified pieces of Theia at the bottom of Earth’s mantle. A new study ...

DC Studios introduced Milly Alcock's Kara Zor-El in the 'Superman', giving a glimpse of the much-awaited character. Now, the ...

From Florida's Kennedy Space Center to Space Center Houston, the best space museums in the U.S. get you up close to rockets, ...

Apple TV's Pluribus is the new incredible sci-fi show on the block. For fans of the series, here are 15 other shows to binge ...