3I Atlas is one of the most unusual interstellar objects ever observed, showing behavior that initially confused scientists.

If you follow science news, you know it: an interstellar comet crossed our Solar System in 2025, 3I/ATLAS. Officially ...

Two massive planets may have once existed in early solar system before being ejected, leaving behind evidence in unusual ...

The Harvard astrophysicist has devoted years—and thousands of interviews—to the idea that mysterious objects streaking ...

A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the White House to lead a ...

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...

The project is expected to enable pioneering discoveries by scientists around the world, and ultimately deliver a time-lapse ...