Astronomers observed that 400 galaxies, including the Milky Way, were all being drawn toward the same region of space.

Invasive insects that resemble tiny wasps are quietly spreading across the United States, threatening pine trees, and experts say Christmas tree farms could be next.

Astronomers detect 10 billion-year-old radio waves from a distant galaxy cluster SpARCS1049, revealing a mini-halo that suggests black holes or cosmic collisions energize galaxies.

Astronomers have uncovered a vast cloud of energetic particles—a "mini halo"—surrounding one of the most distant galaxy clusters ever observed, marking a major step forward in understanding ...

Using NASA's Chandra X-ray space telescope, astronomers have discovered that an entire galaxy cluster is wrapped in a 20 million light-year-wide envelope of charged particles.

A cloud of energetic gas lit up by a collision of galaxies spans nearly 20 million light-years, leading astronomers to question what’s keeping it aglow.

Galaxy clusters are some of the largest structures in the universe, containing massive amounts of hot gas, dark matter, and hundreds — even thousands — of galaxies. As an individual galaxy moves ...

Since the first collision, the clusters have continued traveling outwards and are currently separated by about 11 million light-years.

Astronomers have smashed the record for the largest-known cloud of energetic particles discovered surrounding a galactic cluster—and the find could shake up established physics. The cluster in ...

These Galactic Clusters Smashed Into Each Other. Giant Bow Shocks Suggest They're About To Go For Round 2 A mystery surrounds how these bow shocks are as far away from the galaxy merger as they are.

A cluster of eleven quasars on a galactic boundary challenges existing models, prompting a rethink of quasar formation in large-scale cosmic structures.

Astronomers have explained how a galaxy cluster maintains its heat, despite emitting X-rays that cool the hot gas at its center. The group discovered the existence of a fast-moving, high ...