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

Astronomers have recently started looking for black holes bigger than galaxies. Brian Lacki explains how these “stupendously ...

For millions of years, a frozen wanderer drifted between the stars before slipping into our solar system as 3I/ATLAS—only the third known interstellar comet ever spotted. When scientists turned NASA’s ...

Our free mini version of the classic crossword puzzle with a business twist. Perfect for the crossword enthusiast who only has a few minutes between meetings. New puzzles go live five days a week, ...

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

An interstellar comet that passed through the Solar System last year may be up to 12 billion years old – far older than the ...

The interstellar comet emitted methane, a potential biosignature, as it passed the sun, physicist Avi Loeb says.

A Stanford scientist's model suggests many small rocky planets can't sustain atmospheres, potentially explaining the scarcity ...

A leading astrobiologist argues that advanced aliens may well exist but are likely giving Earth a miss, thanks to vast ...

Salt Clouds on GJ 504b reveal exotic atmospheric chemistry as JWST uncovers a surprising new mystery around the Pink Planet.

Polygon Summer Game Fest 2026 Live game reveals, world premiere trailers, and what’s next from 40+ developers, publishers, and hardware makers. Aliens: Fireteam Elite 2 is a co-op shooter where you ...

In the far reaches of the solar system, the planetary neighbourhood seems quiet. Beyond Jupiter, the sun is no longer a blazing disc, but a cold, white lamp. The planets are separated by gulfs of ...