Astronomers claim to have discovered a new ninth planet in our solar system, according to research led by Terry Long Phan ...

Mercury, the smallest planet in our solar system, has many features that have puzzled scientists for a long time. For […] ...

Spotted thanks to a fleeting light distortion in 2011, a mysterious duo — a tiny star and its hefty companion — has turned ...

CAPE CANAVERAL, Fla. (AP) — A Soviet-era spacecraft meant to land on Venus in the 1970s is expected to soon plunge ...

Friday, May 2, presents a perfect opportunity to catch the mighty ice giant Neptune close to the planets Saturn and Venus in ...

A team of astronomers claims to have sniffed out a “biosignature” in the atmosphere of a distant planet called K2-18b. But ...

By Dave Prosper Astronomers have been trying to discover evidence that worlds exist around stars other than our Sun since the ...

Jupiter and Mars shine in the evening, more planets gather in the morning, and the Eta Aquariid meteors join in.

Comets that have hit Earth have been a mixed bag. Early in Earth's history, during the solar system's chaotic beginning, they ...

The spacecraft was designed to survive falling through Venus's atmosphere. 53 years after launch, it's coming back.

The solar system consists of our star, the sun, and everything bound to it by gravity: the planets Mercury, Venus, Earth, ...