Space

Space wars: the new arms race above our heads

Forget the traditional battlegrounds of land, sea and air. Rapid developments in technology and our reliance on satellites for everything from communication to navigation are pushing conflicts into a new arena: outer space.

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So long Juno, and thanks for all the pics

This July, Juno ends its two-year mission to study and photograph Jupiter. We look back over some of the incredible images that have transformed our understanding of the Solar System’s biggest planet

Who really discovered Halley's Comet?

Edmund Halley wasn’t the first person to spot the celestial object bearing his name, but he proved that what were thought to be several different comets were actually all the same one.