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The smallest planet in our Solar System is getting even smaller
Ten years ago, Pluto emerged from the gloom at the Solar System’s ragged edge – and a new world came in from the cold. Five billion kilometres (3 billion miles) from Earth, on 14 July 2015, NASA’s pia
Scientists distinguish between weight and mass, which may seem pedantic until you see what happens on a world where gravity is radically different to Earth’s
The best discoveries, inventions and surprises
Seeking answers to your science questions? Ask our resident expert, Peter Gallivan
Amazing answers to your curious questions
What would you say if intelligent aliens came calling?
