Astronomers say they have produced one of the most precise measurements of the Hubble constant. Yet plenty of questions ...

AI is spurring ever more data satellites in space. How humanity plans to deal with the clutter is still an open question.

The day when a quantum computer manages to break common encryption, or Q-Day, is fast approaching, and the world is not close ...

For the first time, scientists have measured the instantaneous mind-blowing power of jets blasting from a black hole.

Discover 15 theories that were once doubted but eventually proven true, showing how ideas ahead of their time can change the ...

Nearly a millennium ago, astronomers witnessed a brilliant new star blazing in the sky—a supernova so bright it was visible in daylight for weeks. Today, its expanding remnant, the Crab Nebula, ...

NASA’s Hubble telescope captured an “extraordinarily” rare moment of a comet exploding into fragments, the space agency said. The comet K1, whose full name is C/2025 K1 (ATLAS), was caught fragmenting ...

C/2025 K1 (ATLAS) was on its way out of the solar system when it did the fateful thing that many comets do. Reading time 3 minutes In November 2025, a comet began disintegrating into pieces after a ...

The Hubble Space Telescope captured rare images of a comet as it was breaking apart in November 2025. Credit: NASA / ESA / Dennis Bodewits / Joseph DePasquale For practically as long as NASA's Hubble ...

NASA and ESA have released new images from the Hubble Space Telescope of a comet breaking up as it exits the solar system, captured as part of study recently published in the journal Icarus. The ...

The local universe may be expanding more slowly than previously thought. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space news, the ...

For years now, NASA’s Hubble Space Telescope has had its fair share of brushes with death. The groundbreaking observatory launched into low-Earth orbit 36 years ago, and it’s now been operational two ...