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 ...