Massive interstellar object 3I/ATLAS, larger than Manhattan, shows unusual glow pattern and planetary alignment that Harvard physicist calls potentially technological.

A cosmic visitor is stirring up an earthly debate. A Harvard University astrophysicist has suggested the incoming ...

Is it an alien spaceship or an ancient comet? That’s the question puzzling UFO enthusiasts, NASA, and the European Space ...

Theoretical physicist Avi Loeb says 3I/ATLAS seems to be unusually large, doesn’t appear to have a typical comet’s tail and ...

Avi Loeb, the Harvard science professor who has raised questions about an interstellar object known as 3I/ATLAS, tells ...

Discovered last month by a telescope in Chile, the comet known as 3I-Atlas is only the third known interstellar object to pass our way.

New images from the Hubble telescope show an extrasolar entity as it hurtles through our solar system at speeds of more than 130,000 mph (210,000 km/h).

The latest observations of 3I/ATLAS suggest it resembles comets from the outer reaches of our solar system, but may be ...

NASA's Hubble Space Telescope got an up-close look at a headline-grabbing object known as 3I/ATLAS that has wandered into ...

A draft scientific paper, dated July 22, has proposed that the object, 3I/ATLAS, might be alien technology and could make a surprise attack on our planet.

Instead, scientists are looking into existing spacecraft already in orbit around other planets. Harvard Professor Avi Loeb ...

Harvard astronomer and alien hunter Avi Loeb is still holding onto hope that interstellar object 3I/ATLAS was sent to us by ...