The ingredients that help make a planet livable did not necessarily come from where many scientists once thought. A new ...

"It’s incredible to think there was once a world this large." The post Scientists Find Chunk of Lost Planet in Desert ...

A rare meteorite discovered in the Sahara Desert proves that our solar system almost had at least one extra planet. In a ...

The Solar System is filled with large bodies, between planets, dwarf planets, and large moons. The count goes from dozens to ...

Scientists may have found one of the main sources of rocky material for the solar system, forming diverse populations of baby ...

Our solar system has two ice giants, Uranus and Neptune, but there may have been a third. According to a new study published ...

Scientists have discovered a bizarre planetary system where a rocky world orbits farther out than giant gas planets, defying long-standing theories of planet formation. The finding hints that some ...

The Kepler telescope changed how we saw the sky. It’s just one of the devices we’ve sent out beyond the reach of humans to ...

Four-and-a-half billion years ago, a massive world—possibly as big as the moon or even Mars—orbited our sun before crashing ...

Is Planet 9 real? Scientists have found compelling evidence that a hidden world may be lurking at the edge of our solar ...

Looking at the Solar System, Jupiter and Uranus both have plenty of irregular moons. In supercomputer simulations, the ...

New research suggests the moons of Jupiter and Uranus may hint that our planetary neighborhood once had a third ice giant.