What is 3I/ATLAS and what makes it so interesting? 3I/ATLAS is an interstellar object that was discovered passing through the Solar System by the Asteroid Terrestrial-impact Last Alert System (ATLAS)

Earth exists in a bubble. Our atmosphere forms a protective barrier between everything on the planet’s surface and the near-empty vastness of space. But it’s not the only bubble Earth sits inside. Bey

When comet 3I/ATLAS was discovered in July, on a one-way interstellar journey through our Solar System, Harvard astronomer Avi Loeb suggested it might be an alien spacecraft paying us a visit. Back in

While our planet only has one easily visible Moon, several other tiny objects arguably deserve the title too

It’s a source of some frustration that the last time we spotted a supernova in the Milky Way Galaxy – all the way back in 1604 – no one had a telescope to point at it. We have to content ourselves wit

Comet 24P/Schaumasse is a faint comet, but definitely within reach of amateur imagers. It’s really well placed on 7–11 November, passing in front of the Beehive Cluster, M44 (read more on page 47). Bu