Cosmologists have spent decades trying to pin down exactly how fast the universe is flying apart and whether that rate is ...

New measurements confirm the universe expands faster than predicted, reinforcing the Hubble tension and challenging the standard model of cosmology.

Observations don’t match the predictions of the standard model—and it’s not just a fluke.

A black patch of sky looks empty until you stop taking it for granted. That is the starting point of a theory from Professor Richard Feynman, built around what sounds like a child’s question, why the ...

The Hubble Space Telescope launched in 1990 and marks 36 years in space later this month. Each year, NASA shares a photo taken by Hubble to celebrate the space telescope's anniversary. The photos show ...

NASA has released new Hubble telescope images of the Crab Nebula — taken 25 years after the iconic observatory first gazed at the colorful cosmic crustacean. These new images reveal the changing ...

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, ...

In a happy twist of fate, NASA's Hubble Space Telescope witnessed a comet in the act of breaking apart. The chance of that happening while Hubble watched is extraordinarily minuscule. The findings are ...

"It's not every day that you come up with an entirely new tool for cosmology." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A team of ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. A new “stochastic siren” method uses the gravitational-wave background to sharpen estimates of the Hubble constant. (CREDIT: NASA) ...