What is a starquake?

20 amazing answers t o curious

Isn’t it amazing that astronomy – humanity’s oldest science – continues to generate such a delightful amount of new knowledge? Seeing as we’ve been studying the motion of the stars for a good long whi

Of the hundreds of thousands of asteroids in our solar system, it is all too feasible that one could strike Earth. If scientists discover this is likely to happen, what are our options for defending ourselves – and who will make the key decisions? Tomas Weber reports

A heartbeat-like pulse has been discovered beating deep beneath East Africa – and it’s ripping the continent apart. The strange thumping is caused by a rhythmic surge of molten mantle rock rising and

A citizen astronomy project known as Kilonova Seekers has discovered an exploding star system in real time. Described as like a game of astronomical ‘spot the difference’, the project invites members

Flicking through the pages of BBC Sky at Night Magazine each month, you’d be forgiven for thinking astronomers have black holes pinned down. Whether it’s the dramatic imaging of black hole shadows by