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

Watch this video to find out more about the Earth, planets in our Solar System and other planets far ... The largest object is the asteroid belt is the dwarf planet Ceres, which is 950km in ...

This image of Pluto, one of 77 composite photographs that appeared in Otherworlds: Visions of our Solar System, shows the dwarf planet lit from behind by the Sun, surrounded by a tenuous, hazy blue ...

Astronomers think that a dwarf planet hiding in the middle of our solar system could be a source of frozen water. The dwarf ...

The Carnegie Institution for Science and the International Astronomical Union’s Minor Planet Center has announced the discovery of dwarf planet ... the life of the solar system and that there ...

Best known for driving demotion of Pluto to dwarf planet, astronomer Mike Brown discusses the next horizons in our solar system, including the hunt for the elusive Planet 9. This article was ...

We went to the public library in Sham Shui Po during our school’s reading week. Hong Kong’s public libraries give us many ...