For decades, astronomers wondered why most nearby galaxies are speeding away from the Milky Way instead of being pulled in by its gravity. New simulations reveal the answer: our galaxy sits in a ...

The discovery of CDG-2 began when a team of astronomers investigated tight groupings of stars called globular clusters, which ...

Astronomers report a supergiant star in the Andromeda Galaxy, M31-2014-DS1, collapsed directly into a black hole without a supernova, confirming predictions of failed stellar explosions.

Astronomers have caught a massive star in the Andromeda Galaxy quietly dying, collapsing into a black hole without producing a supernova, leaving behind little more than a fading trace. The findings ...

A massive star in the Andromeda Galaxy has vanished. Over nearly a decade, astronomers watched as the brilliant supergiant faded from view until it became completely invisible. The star didn’t explode ...

"This is essentially as close as we can get to seeing the death of a massive star." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Keith Miller, ...

In the vast tapestry of the universe, most galaxies shine brightly across cosmic time and space. Yet a rare class of galaxies remains nearly invisible—low-surface-brightness galaxies dominated by dark ...

It's well established that the universe is expanding, but there's serious disagreement among scientists over how fast it's happening. Two of our best ways of measuring the cosmic expansion rate, the ...

On those dark, moonless nights, when Yosemite is engulfed in quiet spirals of cool mist, magic unfolds in the skies above its towering El Capitan. Rising 3,000 feet from the valley floor, the ancient ...

A galaxy so faint it escaped detection for as long as anyone has been scanning the sky has finally been found. Called CDG-2, this newly identified “ghostly” galaxy may be one of the most dark ...

This deep space image taken by NASA's Hubble Space Telescope contains CDG-2, a dark matter-dominated galaxy. Credit: NASA / ESA / David Li et al. / J. DePasquale Astronomers have spotted something ...