Galaxies are clouds of stars that range in both size and composition. Some contain hundreds of millions of stars while the largest galaxies can contain trillions of stars. And while it’s not entirely ...

An inexplicably hot, fast-growing cluster of galaxies in the early universe has scientists questioning theories of galactic ...

The galaxy cluster appears hotter and more mature than it should for its young age, challenging what we think we know about ...

A recent study provides answers to three seemingly disparate yet pressing cosmic dawn puzzles. Specifically, the authors show ...

Astronomers sweeping through the archive of NASA's James Webb Telescope found a group of galaxies with an unknown combination ...

Observations of ultra-massive galaxies, each containing more than 100 billion stars, show that less than 2 billion years ...

Astronomers found a young galaxy cluster with unexpectedly hot gas, suggesting cosmic structures formed faster than once ...

Gas within the cluster, which existed merely 1.4 billion years after the Big Bang, is at least five times hotter than ...

Scientists have discovered a giant cosmic filament where galaxies spin in sync with the structure that holds them together. The razor-thin chain of galaxies sits inside a much larger filament that ...

Over its planned two-year mission, the $488 million telescope will scan the entire night sky every six months and collect ...

Blue Sky Science is a collaboration of the Wisconsin State Journal and the Morgridge Institute for Research. A black hole discovered 1,000 light-years from Earth is itself invisible, but it has two ...