Space & Physics

Planet demographics reveal a puzzling lack of worlds in a certain size range throughout the galaxy

People are surprisingly bad at guessing knot strength, a study found

New atomic clocks are more accurate than those used to define the second, suggesting the definition might need to change

Physicists are finding new ways to model false vacuum decay, a terrifying, albeit remote, cosmic endgame

It’s neither fast nor food, but a spectacular object called HH 30 looks appetizing for astronomers in a new image from the James Webb Space Telescope

A “ghost particle” discovered by a detector in the Mediterranean carried 30 times more energy than any neutrino observed to date

News of an asteroid with a 2 percent chance of hitting Earth in 2032 made headlines. But is its fluctuating risk really cause for concern?

In partnership with NASA, the Intuitive Machines lander Athena will send a water-seeking drill, a pogo-sticking crater probe and other novel technologies to the moon

“Keep your eye on the ball” is a motto for many athletes—and for astronomers trying to find Earth-threatening space rocks

Could tiny swimming microbes help us unlock the mysteries of extraterrestrial life?

Elon Musk’s Fork in the Road isn’t just a sculpture—it’s a monument to the tech world’s obsession with civilizational survival, which has its roots in the search for extraterrestrial intelligence

A newly confirmed exoplanet around a nearby sunlike star might be astronomers’ best chance yet to look for life beyond the solar system—but it’s still no place like home