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

Case in point: Scientists from Tokyo University and Hokkaido University in Japan stumbled across some mysterious jet-black ...

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

The International Space Station is now home to an even more capable quantum laboratory, where NASA cools atoms to nearly ...

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

Astronomers may have witnessed one of the rarest and most dramatic cosmic events ever seen: a long-sought intermediate-mass ...

Beneath the surface lies an alien ocean packed with bizarre survival strategies, terrifying hunters, and creatures unlike ...

Iranian drone formation witnessed by a rescued US fighter pilot has sparked debate over Tehran’s drone warfare capabilities ...

Astronomers studying the interstellar comet 3I/ATLAS say it could be a 12‑billion‑year‑old relic formed in near‑absolute‑zero ...

Is the rest of the cosmos a pristine environment awaiting the arrival of humanity’s “post-human” descendants? Or is advanced ...

In the exhibition, Unknown Occupant, the artist works with symbolism to explore the tension between visibility and anonymity ...