There’s a new object in the distant reaches of our solar system, and it might just offer clues to a long-standing cosmic ...

Astronomers have announced the discovery of a new dwarf planet in our solar system, named 2017 OF201. Located far beyond ...

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

Astronomers find evidence of a possible ninth planet beyond Neptune, reigniting the debate about the formation of the Solar ...

The moon will rise with Venus and the ice giant Neptune in the pre-dawn sky on Thursday, May 22.Stargazers in the U.S. will ...

There’s a new frozen oddball orbiting the Sun, and it’s not your average space rock. It’s a planet—a minor one, to be ...

Scientists had previously believed that no celestial bodies existed in the vast, empty section of space beyond Neptune.

Saturn and Neptune are joined by the crescent Moon in the early-morning sky as our satellite moves along the ecliptic.