Concern grows over bright satellites

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

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

In a remote mountain range in Chile, a newly unveiled observatory will soon begin mapping the sky. When its survey starts, the Vera C Rubin Observatory will spend every night for the next decade chart

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

Is it a bird? Is it a plane? No, it’s a mysterious interstellar interloper spotted passing through our Solar System. The comet, named 3I/ATLAS, was discovered by NASA’s Asteroid Terrestrial-impact Las

Star and deep-sky catalogues are crucial resources for making sense of the night sky. There are a lot of them, though – so many, in fact, that you almost need a catalogue of catalogues to keep track o