Comets
Brand new image of interstellar comet 3I/ATLAS shows it's becoming more active and getting longer as it approaches the Sun
Interstellar comet is about to make extremely close passes of Earth, Mars and the Sun
Observing guide | What comets and asteroids are in the sky tonight?
What comets and asteroids can you see in the sky tonight and over the coming weeks? Find out when and where to look to see a Near Earth Object.
Interstellar visitor 3I/ATLAS could be the oldest comet we've ever seen
Comet-chaser captures image of comet that could become visible through binoculars this autumn
Two of NASA's most powerful space telescopes take a closer look at comet 3I/ATLAS, find water and CO2
Video and images show interstellar comet 3I/ATLAS's movement across the night sky
What is a comet?
Comets, the least predictable Solar System visitors, can be one of its great highlights.
Hubble Space Telescope image of comet 3I/ATLAS
Interstellar comet 3I/ATLAS
One of Earth's most powerful telescopes turns its sights on the interstellar visitor travelling through our Solar System
Smart telescope users join forces to photograph the interstellar comet moving through our Solar System
Hale–Bopp gets all the glory, but not many remember another beautiful comet that graced our skies the year before
Comet Hale-Bopp, the story of a visitor from the edge of the Solar System
What was Comet Hale-Bopp, how was it discovered and why was its appearance in the night sky so important? Katrin-Raynor Evans explores the history of this celestial visitor.
Comet-chasers disappointed as Comet C/2025 F2 (SWAN) falls apart on its journey around the Sun
Comet C/2025 F2 (SWAN) seems to be fading and may not be around long. Here's how to see it while you can
Comet C/2023 A3 (Tsuchinshan-ATLAS)
Comet C/2023 A3 (Tsuchinshan-ATLAS) was one of the astronomy highlights of 2024.
