Astronomers are tracking interstellar comet 3I/ATLAS after JWST and NASA missions detected an extreme CO₂ outburst that ...

Comet 3I/ATLAS was identified as the third confirmed interstellar object after 1I/‘Oumuamua and 2I/Borisov. At the time of its discovery, the comet was faint, with a magnitude of around 17th to 18th.

What: Comet 3I/ATLAS reached perihelion on October 30, 2025. This special SETI Live explored what scientists have learned about its origin, chemistry, and trajectory ...

What: Astronomers using JWST and ALMA have captured the earliest known stage of planet formation around the protostar ...

Could a comet be sent on such a trajectory through the galaxy that its surface no longer reflects the world from which it came? New observations of the comet 3I/ATLAS by the James Webb Space Telescope ...

Can the fastest brightening ever recorded in a comet rewrite what we know about interstellar visitors? As Comet 3I/ATLAS ...

NASA confirms 3I/ATLAS visible tonight — learn when and where to spot the rare interstellar comet lighting up Earth's skies ...

Harvard's Avi Loeb says interstellar comet 3I/ATLAS may show forces beyond gravity. Scientists using JWST and Swift report unusual chemistry but urge caution.

The scientific debate surrounding interstellar object 3I/ATLAS has escalated sharply, with leading physicists publicly ...