Did you know that comets spin? Our Swift telescope has been watching comet 41P/Tuttle-Giacobini-Kresák - 41P for short - and it’s suddenly spinning slower and slower. In fact, it’s slowing down more dramatically than any comet observed before. What’s causing this spindown? It might be due to the sunlight-activated jets that cover more than half of 41P’s surface, along with the comet's shape and small size. The comet is expected to keep slowing down, which may make its rotation unstable - and its

Observation of Comet ISON (C/2012 S1), November 2024. Location: Azores, São Miguel Island. Telescope: Celestron AstroMaster 130AZ (Newtonian reflector). Captured with Xiaomi 14 Ultra. A huge thank you to #Celestron for making it possible to witness such rare and breathtaking cosmic events. Their telescopes open a window to the Universe — revealing wonders invisible to the naked eye and bringing the beauty of the cosmos closer than ever. | Мир глазами микроскопа

A comet from another star system is flying through ours. The comet, named 3I/ATLAS, is only the third known interstellar object ever observed in our solar system. First spotted in July 2025 by the ATLAS telescope in Hawaii, it didn’t take long for astronomers to realize it wasn’t from here. Its speed and trajectory made it clear: this comet came from deep space. At its closest point to the Sun – called perihelion – 3I/ATLAS was hidden from Earth’s view, blocked by the Sun. But Mars was perfectly