For the better part of a century, we believed there were nine planets in our solar system, with Pluto being the farthest from the sun. Since the discovery of more Pluto-sized dwarf planets, that ...

The relative quantities of volatile gases like methane and ethane can reveal key details about distant Kuiper Belt objects.

Why was Pluto reclassified as a dwarf planet? One might think that it’s purely a matter of size. Mercury, the smallest of the ...

The first time you may have heard the term ‘dwarf planet’ was when Pluto got demoted to one in 2006 (RIP). However, we actually have six in our Solar System. Pluto, Ceres, Makemake, Haumea, and Eris ...

Exploration of Pluto began in a major way with the New Horizons, from NASA, which provided some of the most remarkable discoveries about the planet. Check out the 10 most interesting facts about the ...

Josh Dury’s pioneering image shows Mars, Jupiter, Uranus, Saturn, Venus, Neptune and Mercury, as well as Earth, in ‘great planetary parade’ ...

The planetary parade — what appears to be a straight-line formation of several planets in the night sky — is expected to grace our night skies on Friday, Feb. 28. While it won’t be easy to ...

Don't expect any ground-breaking drama because Pluto is the planet that is furthest from Earth, therefore, its yearly backspin is usually more modest and slow-burning than some others. To get ...

Don't expect any ground-breaking drama because Pluto is the planet that is furthest from Earth, therefore, its yearly backspin is usually more modest and slow-burning than some others. To get ready ...

This week, stargazers across the UK are in for a treat as all seven planets will be visible during an incredibly rare sighting that won't happen again until 2040. Mars, Jupiter, Uranus ...

This stunning photo shows every single planet in the solar system at the same time during a rare alignment that won’t happen again until 2040. Taken from a field in Somerset, the groundbreaking ...

Find a Dark Location: Head away from city lights to maximise visibility. Use Binoculars or a Telescope: While some planets can be seen with the naked eye, optical aids will enhance the experience.