Dec 4, 2025 · Comet 3I/ATLAS is the third known object from outside our solar system to be discovered passing through our celestial neighborhood. Astronomers have categorized this object as interstellar …

3 days ago · The comet, discovered in July 2025, originated far beyond our Solar System and is thought to be around 7 billion years old - even older than the Sun. Two stunning new images of the …

Jan 2, 2026 · When 3I/ATLAS swept past the sun in late October 2025, it became only the third confirmed visitor from interstellar space ever detected. Unlike the mysterious 'Oumuamua, which …

2 days ago · The Hubble Space Telescope's newest images of 3I/ATLAS confirm the presence of its sunward anti-tail, contrary to the usual comet tails.

Jul 3, 2025 · Astronomers have confirmed the discovery of a rare celestial visitor: a comet from beyond our Solar System. Officially named 3I/ATLAS, this newly identified interstellar object is only the third …

3I/ATLAS, also known as C/2025 N1 (ATLAS) and previously as A11pl3Z, is an interstellar comet [18][19] discovered on 1 July 2025 by the Asteroid Terrestrial-impact Last Alert System (ATLAS) …

6 days ago · Key Takeaways Comet 3I/ATLAS is the third confirmed interstellar object, discovered on 1 July 2025, and has a hyperbolic trajectory indicating it is passing through our Solar System. The …

Aug 27, 2025 · 3I/ATLAS is a rare interstellar comet passing through our solar system, making detailed observation both urgent and illuminating. Discovered on July 1, 2025 by the ATLAS survey in Chile, …

Jul 7, 2025 · How do we know 3I/ATLAS, also called comet C/2025 N1 (ATLAS), is interstellar? Will it strike Earth? Can we visit it? Here are all of your questions answered.

Dec 22, 2025 · Comet 3I/ATLAS, interstellar object and possibly the oldest known comet. It was discovered by the robotic survey project Asteroid Terrestrial-impact Last Alert System (ATLAS) on …