Astronomers are searching for a potential ninth planet, known as Planet Nine, which could reshape our understanding of ...

A planet parade like the one beginning tonight is quite uncommon, occurring once every 10-20 years. Here are the planets you ...

Smaller gas giants are less likely to survive in such systems, surrounded by clashing planetary titans. With their lower ...

NASA’s shocking claim hints at a hidden planet, possibly 10 times Earth's size, or a primordial black hole. Gravitational ...

There are eight official planets (sorry, Pluto) in our solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and ...

Learn about the size, temperature, and colour of each planet, and discover why Pluto is no longer considered a planet.

Astronomers believe that our solar system may still hold surprises ... Astronomers believe that Planet Nine could be 5-7 times the size of Earth and situated more than 200 times farther from ...

Astronomers are on the hunt for a mysterious ninth planet, known as Planet Nine, which could change our understanding of the solar system. Is this hidden world real, or just a myth?

A planet parade is when several of our solar system's planets are visible in the night sky at the same time. There will be six planets visible this time around, including Venus, Mars ...

A researcher has used advanced models that indicate that the formation of Pluto and Charon may parallel that of the Earth-Moon system. Both systems include a moon that is a large fraction of the size ...