Harvard astrophysicist Avi Loeb has cowritten a research paper speculating whether the comet 3I/ATLAS is in fact "hostile" alien technology.

A new interstellar object in the solar system should be investigated for the possibility that it's an alien craft, according to theoretical physicist Avi Loeb.

"We should put all possibilities on the table that it's a rock, a comet, or something else until we get the evidence, the data that will tell us what it is," Loeb said in an interview with WBZ-TV.