Mercury, the smallest and innermost planet in our solar system, may be home to a dazzling secret hidden beneath its scorched ...

"What surprised us, at the end, was how effective this type of impact could be in explaining Mercury's unusual structure ...

Jupiter is the largest planet in the solar system. It's about 11 times wider than Earth with an equatorial diameter of 88,846 ...

About 5,800 planets beyond our solar system, called exoplanets, have been discovered since the 1990s. Of those, only four ...

April’s planetary parade has fewer planets. Only four will line up: Venus, Saturn, Mercury and Neptune. April's parade of ...

Astronomers have spotted a small rocky planet that orbits perilously close to its host star disintegrating as its surface is ...

Learn why the planet, BD+05 4868 Ab, is only the fourth such discovered and will disappear in one to two million years.

How can we successfully collect and return samples from Mercury and Venus to Earth? This is what a recent study presented at ...

Venus is the hottest planet in the solar system due to its thick carbon dioxide atmosphere, trapping heat as part of a ...

Mercury's mysterious makeup may be the result of a grazing "hit and run" collision between two similar-sized protoplanets in the early solar system, a new study suggests. Mercury, the smallest and ...

Scientists know of over a dozen planets that orbit twin stars like the fictional “Star Wars” desert planet Tatooine.