Disguising your probes as interstellar space rocks might be one way to do that. Loeb, Hibberd, and Crowl make the case that if 3I/ATLAS were an alien spacecraft, its current trajectory would allow ...

In the past decade, astronomers have witnessed three interstellar objects (ISOs) passing through the solar system. These include the enigmatic 'Oumuamua in 2017, the interstellar comet 2I/Borisov ...

Nearly a month ago, a mysterious object was seen hurtling through the solar system and later confirmed as an interstellar visitor traveling toward the Sun. Several telescopes have since turned ...

Almost certainly a comet From the moment it entered our view, 3I/ATLAS—the third interstellar object ever detected in our solar system—instantly became the biggest news in astronomy for the ...

A controversial new paper questions whether the interstellar object 3I/ATLAS is a potentially dangerous alien probe, similar to claims made about 'Oumuamua. But experts have called it "nonsense".

It's only the third confirmed interstellar object to have reached our star system, following 'Oumuamua, which was spotted in 2018, and a comet dubbed 2I/Borisov, which was identified in 2019.