Dec 23, 2025 · From jaw-dropping astrophotography to close brushes with the sun and a savage break up. here's six events that made 2025 the year of the comet.

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Aug 21, 2025 · Currently, Comet Lemmon is in the dawn sky in the constellation Gemini. The comet is showing signs of increased activity and has brightened quickly during the last month, …

Oct 30, 2025 · Comet Lemmon is now slipping away from our Solar System, and it’s time to say goodbye. Brighter than 90% of the comets that visit our cosmic neighborhood, it was admired …

Dec 3, 2025 · Comet 3I/ATLAS Cataloguing the journey of comet 3I/ATLAS through the solar system. Because the object comes from outside our solar system, it is just passing through – …

Aug 22, 2025 · Comet C/2025 A6 (Lemmon) is currently in the constellation of Gemini, around 346,951,344.8 kilometres from Earth. It is racing towards the inner solar system and will reach …

We have highlighted 97 comets with a magnitude of 20 or less that are more likely to be observable. The list updates regularly to reflect changes in visibility, and we display only those …

Jan 11, 2025 · On the same day, we will also see it at its closest point to Earth, and it could become 2025’s brightest comet, during a year in which no other comets are likely to be visible …

4 days ago · A dedicated scan for signs of radio-transmitting technology in interstellar comet 3I/ATLAS has come back with absolute cometary radio silence.

5 days ago · The comet's substantial water production also raises intriguing questions about its nucleus size and surface activity. Based on Hubble Space Telescope observations, the …