The solar system is our cosmic neighborhood, made up of the sun and everything that orbits it — planets, moons, asteroids, comets, and even dust and gas. The order of the planets in the solar ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

This is probably the most convincing evidence for Planet Nine so far. It is believed that this planet is five to ten times ...

Earth has four seasons, but do other planets in our solar system also have hot summer days and cold winter nights?

The sun has produced stunning auroras on Earth in recent years as solar activity has peaked—but expect more in coming years ...

New data from the James Webb Space Telescope suggests a planet in a faraway solar system was consumed by a star by hurling ...

Discovered in 1930, Pluto was long considered our Solar System's ninth planet, but was unseated in 2006 after the discovery ...

Thanks to JWST, we've learned key details about methanol — a key building block for organic compounds necessary for life — on ...

The long-theorized Planet 9, which astronomers ... roughly 120 degrees from the plane of the solar system, meaning it would actually orbit the Sun in the opposite direction than the other eight ...

To put that in perspective, this new planet at the outer rim of the solar system would be almost 20 times farther away from the sun than Pluto is. Pluto, which infamously lost its status as the ...

Astronomers may have found a candidate for Planet Nine. This planet is beyond Neptune. The finding could be the first ...

The Solar System consists of our star, the Sun, and everything bound to it by gravity; the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, along with dwarf planets like ...