Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

But of these planets, which is nearest to the sun? Mercury is a strange little world. There are some craters on its surface that never see sunlight. It also has the most extreme temperatures of ...

Up to seven planets are set to align in the night sky over the UK in January and February - here's when and how to see the rare event.

It is not often that all the planets in the Solar System other than ours are lined up across the night sky for us to see.

Stargazers will be treated to a rare alignment of seven planets on 28 February when Mercury joins six other planets that are already visible in the night sky. Here's why it matters to scientists.

This month, six planets have been visible in the sky - and will be joined by Mercury in a few weeks' time. Mars, Jupiter, Uranus, Venus, Neptune, Saturn and Mercury will be strung across the sky ...

Each planet takes a different length of time to orbit the sun: Venus, for instance, completes one orbit in 225 days, while Mercury zips around the star in 88 days and Saturn takes 29.4 years to ...