WHAT'S IN A NAME? Pluto is also the name of the Greek god of the underworld. It was suggested by many people as a name for Planet X, but the credit was given to an 11-year-old girl from England.

IT has a surface temperature of minus 225 degrees Celsius and was once the ninth and most distant planet from the Sun. But how big is it? Here’s all you need to ...

Pluto is so far away from Earth that everything we know about it can be written down on a couple of 3 x 5 inch index cards. But Pluto will come into clearer focus in a few years' time, though, as NASA ...

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February 18, 1930, is a truly historic day for science, as this was the day Pluto was officially discovered by Clyde W Tombaugh at the Lowell Observatory. This distant icy world is one of the most ...