Dec 18, 2025 · Interstellar comet 3I/ATLAS will make its closest approach to Earth on Friday. New X-ray images could shed light on its composition.

Dec 16, 2025 · Since its discovery on 1 July 2025, 3I/ATLAS has proven to be one of the most peculiar comets humanity has ever seen. As it draws closer, first to the Sun and Mars, now to Earth, its …

Dec 17, 2025 · The deep-space comet 3I/ATLAS that’s currently barreling through the solar system — which some have speculated may be an alien spacecraft — will make its closest approach to Earth …

Oct 7, 2025 · Since its discovery, this interstellar comet has been changing dramatically as it journeys through our solar system. For the first time in what may be billions of years, it is feeling the warmth of …

6 days ago · 3I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next …

Dec 18, 2025 · Interstellar comet 3I/ATLAS will soon reach its closest distance to Earth, so this may be our last, best chance to see this rare object before it heads back out into the universe, never to return ...

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) …

Dec 15, 2025 · Interstellar comet keeps its distance as it makes its closest approach to Earth This image, provided by NASA, shows the interstellar comet 3I/Atlas captured by the Hubble Space …

Dec 4, 2025 · NASA’s Hubble Space Telescope reobserved interstellar comet 3I/ATLAS Nov. 30, with its Wide Field Camera 3 instrument.

Sep 8, 2025 · Despite some suggestions that it could be an alien spacecraft, observations from some of the most powerful telescopes quickly revealed it to be a comet rocketing our way.