Watch this video to find out more about the Earth, planets in our Solar System and other planets far ... This allows us to compare the planets in even more detail. Mercury and Venus are both ...

Mars’ strangely small mass still puzzles planetary scientists. Definitive answers as to why are still hard to come by.

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

Planets in the box have the right atmospheric pressure and the right temperature to keep surface water in a liquid state. In our solar system Earth ... for an easier comparison of the exoplanets.

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 ...