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 ...

Deep within Uranus and Neptune, immense pressure and heat are transforming carbon into diamonds that rain down through the ...

With the speed at which the rover completed this marathon, and how well it continues to explore on Mars, who knows, maybe ...

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 ...

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 ...

A NASA‑linked study argues that alien probes could already be in our Solar System, but our surveys are still too crude to ...