A Harvard University astrophysicist has sparked a furious debate by warning he cannot rule out that extraterrestrials are paying us a visit.

3I/ATLAS, an interstellar object whose unusual motion has ignited debate over possible artificial origins Astronomers are baffled by 3I/ATLAS, a newly discovered interstellar object that appears to be ...

Do aliens exist? Based on how many alien invasion movies there are, you'd be forgiven that there's gotta be some proof of extraterrestrial life—and that the aliens are out to get us here on Earth. But ...

Astronomers are baffled by 3I/ATLAS, a newly discovered interstellar object that appears to be defying the basic laws of celestial motion. Instead of drifting naturally through space, the mysterious ...