This means that Pluto is not a planet, but a dwarf planet. In our solar system, there are five dwarf planets: Ceres, Haumea, Makemake, Eris and of course, Pluto.

Finding an exoplanet in a star’s habitable zone always generates interest. Each of these planets has a chance, even if it’s ...

Pluto, the largest of those dwarf planets, has a diameter of about 1,477 miles (2,377 km). The mass of 2017 OF201 is estimated to be about 20,000 times smaller than Earth's and 50 times smaller ...

Pluto, the largest of those dwarf planets, has a diameter of about 1,477 miles (2,377 km). The mass of 2017 OF201 is estimated to be about 20,000 times smaller than Earth’s and 50 times smaller ...

Pluto: Once known as the ninth planet of our solar system, Pluto has been reclassified as a dwarf planet, located in Kuiper Belt. Discovery: Astronomer Clyde Tombaugh discovered Pluto in 1930.

A telescope has discovered a new world on the edge of the Milky Way – potentially confirming the ‘Planet X’ theory. Beyond ...

Astronomers have discovered a new pink dwarf planet that has the most distant orbit in our solar system. The discovery suggests there could be thousands of similar planets beyond the known edge of ...