The Vera C. Rubin Observatory has released its first images, including a photo called the “Cosmic Treasure Chest,” showcasing about 10 million galaxies and marking a major milestone in an $810 million ...

They often twirl around heavier ones, like our Milky Way, as satellite dancers. The dark matter distribution of a Milky Way ...

The only place that's likely to happen is at the very center of our galaxy. And, for a while, there was an excess of ...

Roughly 85% of the universe is made of dark matter—but no one knows what it actually is. Some physicists now believe it could be part of a hidden "Dark Universe, " possibly with its own version of ...

A massive, spacetime-warping cluster of galaxies is the setting of today's NASA/ESA Hubble Space Telescope image. The galaxy ...

Imagine a star powered not by nuclear fusion, but by one of the universe’s greatest mysteries—dark matter. Scientists have ...

New supercomputer simulations suggest the Milky Way could be surrounded by dozens more faint, undetected satellite ...

Dark matter is one of nature's most confounding mysteries. It keeps particle physicists up at night and cosmologists glued to ...

New simulations suggest that dozens of ultra-faint “ghost” galaxies may be orbiting the Milky Way, hidden from current ...

Tony Tyson’s cameras revealed the universe’s dark contents. Now, with the Rubin Observatory’s 3.2-billion-pixel camera, he’s ...