Interstellar comets are the original cosmic explorers, and by studying their metallic whispers, we are learning the secrets of worlds we may never see directly.

The interstellar visitor may still have a few things to tell us before it leaves our solar system.

NASA’s TESS tracked the interstellar comet during a special observation period from January 15 to 22, 2026.

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 ...

Fast-moving objects like interstellar comet 3I/ATLAS may be planet-forming seeds, potentially helping to solve an old Solar System mystery. On July 1, 2025, astronomers spotted an object moving ...

The recently discovered interstellar object 3I/Atlas is set for a close flyby of Mars in October, where it can be observed by orbiters around the planet. Reading time 2 minutes In June, a mysterious ...

Interstellar objects like 3I/ATLAS that have been captured in planet-forming discs around young stars could become the seeds of giant planets, bypassing a hurdle that theoretical models have ...