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

In 2020, astronomers detected WD 1856+534 b, a gas giant that orbits a star 81 light-years from Earth. This exoplanet, which ...

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

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

A new look through decades-old data has unveiled some of the most compelling evidence yet of a hidden ninth planet in the far ...

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

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

Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why ...

sitting in the Kuiper Belt - a region in our solar system beyond Neptune filled with icy objects, comets, and dwarf planets like Pluto. Since this hidden planet may be so far away, the new study ...