A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

A new study led by UNLV scientists sheds light on how planets, including Earth, formed in our galaxy—and why the life and ...

This article contains spoilers for 2019's The Outer Worlds. With The Outer Worlds 2 imminently about to drop, we think it's a ...

A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on?

A piece of a suspected rocket found on fire in Western Australia highlights the growing problem of space junk – and how ...

Our solar system now, once again, officially consists of only eight planets. Although largely debunked, speculation continued ...

What if our understanding of Uranus and Neptune's compositions have been wrong, specifically regarding their classifications ...

The Earth is getting darker due to decreased aerosol pollution, melting sea ice, and reduced cloud cover, causing it to ...

No one can say with scientific confidence why we exist or what happens when we die. In fact, scientists have a tenuous grasp ...

China's Chang'e-6 mission, the first sample return mission to the far side of the Moon, discovered extremely rare water-rich ...

Previously undetected organic compounds have been found in ice ejected into space from Enceladus, making the satellite a ...