Researchers have obtained the deepest images ever taken of IC 1101, allowing them to identify the galaxy's outer edge for the first time. The observations confirm it as the largest known galaxy, ...

One of the oldest known objects in the universe is wandering around the Milky Way. Star cluster M92, a densely packed ball of stars roughly 27,000 light-years from Earth, is about 13.8 billion years ...

The Bullet Cluster is a massive collection of two large groups of galaxies some 3.8 billion light-years distant. The two groups appear to have collided in one of the most energetic events known in the ...

Astronomers have discovered the largest known cloud of energetic particles surrounding a galaxy cluster—spanning nearly 20 million light-years. The finding challenges long-standing theories about how ...

Add Yahoo as a preferred source to see more of our stories on Google. A group of about 1,000 stars known as the beehive cluster is swarming a sky near you. Stargazers who look up in January may be ...

Scientists have created the first detailed reconstruction of a galaxy cluster’s magnetic field, revealing the invisible ...

Astronomers have discovered a large reservoir of hot gas in the still-forming galaxy cluster around the Spiderweb galaxy -- the most distant detection of such hot gas yet. Galaxy clusters are some of ...

The names of the members of our solar system date back to antiquity, derived from gods and goddesses. Sometimes an object’s name connects to its constellation — the Orion Nebula and Andromeda Galaxy ...

New findings explain the Phoenix cluster's mysterious starburst. Data confirm the cluster is actively cooling and able to generate a huge amount of stellar fuel on its own. The core of a massive ...