A Harvard scientist has suggested that our Solar System may be far more crowded with interstellar objects than anyone ...

Harvard scientist Avi Loeb suggests comet 3I/ATLAS may be an alien vessel seeding life, after NASA's SPHEREx spacecraft detected unexplained methane and organic chemicals on board.

Interstellar comets are the original cosmic explorers, and by studying their metallic whispers, we are learning the secrets ...

Far out in the dark between the stars, a small visitor is carving a path through our solar system and leaving behind patterns ...

Interstellar comet 3I/ATLAS has triggered fevered speculation after the James Webb Space Telescope detected an "out of order" burst of methane in its coma, puzzling even seasoned astronomers. While a ...

Is 3I/ATLAS just a comet — or an intergalactic ark? A NASA spacecraft has discovered organic chemicals on 3I/ATLAS, which ...

It did not subside after the nearest approach of Comet 3I/ATLAS to the Sun; it became bright once more. The delay of that burst is significant, as it transforms a rapidly traveling alien interstellar ...

Lightsabers curling plasma, jetpacks for casual flights: My 15 top absurd picks from Star Wars to The Rocketeer show how ...

Astronomers are tracking a visitor called 3I/ATLAS, the third confirmed interstellar object ever observed. The two previous instances were 1I/’Oumuamua in 2017 and 2I/Borisov in 2019. 3I/ATLAS is ...

The launch of NASA and SpaceX's Crew-12 mission to the International Space Station has been delayed to no earlier than Friday ...

New infrared observations reveal that the rare interstellar visitor known as comet 3I/ATLAS has dramatically brightened ...

NASA's infrared telescope SPHEREx captured stunning images of interstellar comet 3I/ATLAS as it exited the solar system.