Cutting edge

What would you say if intelligent aliens came calling?

New model suggests Hawking radiation is speeding cosmic decay Scientists have long predicted that the Universe’s lifetime is effectively forever – specifically, 101100 years. But now scientists from R

On 23 July 1999, Space Shuttle Columbia launched its heaviest-ever payload: the Chandra X-ray Observatory, a new flagship telescope for NASA. It is the world’s most powerful X-ray telescope, capable o

Amazing answers to your curious questions

Seeking answers to your science questions? Ask our resident expert, Peter Gallivan

Galaxies come in all sorts of shapes and sizes. They can be broadly classified as spiral, elliptical or irregular, but each of these still leaves plenty of scope for variety. Take, for instance, the s