For decades, our solar system was thought to have nine planets, with Pluto considered the smallest and farthest. But in 2006, ...

a yellow dwarf star that contains 99.8% of the solar system's mass. Everything else — from the eight major planets to dwarf planets, comets, asteroids, and icy objects — revolves around it.

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

But that includes exoplanets, alien worlds that orbit alien suns. Only eight planets call our solar system home. Or there might still be nine if some astronomers are correct about an as-yet ...

For instance, Neptune migrated outward, switching places with Uranus, and pushed a lot of the small, icy bodies into the ...

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

The Solar System consists of the eight planets that orbit our Sun and other celestial bodies such as moons, comets, asteroids, minor planets, and dust and gas. Sun is considered as the centre of ...

Jupiter, roughly 562 million miles from Earth today, has nearly 100 moons. But Batygin and his collaborator Fred Adams' ...

The eight planets in our solar system orbit the sun in roughly the same plane, because they all originally formed from the same disc of debris around the sun. The line the sun traces across the ...

The eight planets in our solar system orbit the sun in roughly the same plane because they all originally formed from the same disc of debris around the sun. The line the sun traces across the ...