Firefly Sparkle,” a galaxy that existed about 600 million years after the big bang, has been imaged by the James Webb Space ...

M71 is around 27 light-years across. Globular clusters are typically seen in the galactic suburbs, large bright balls of ...

Views of a massive galaxy cluster Abell 2256 have been captured by NASA’s Chandra X-ray Observatory, ESA’s XMM-Newton and ...

Using NASA's Chandra X-ray space telescope, astronomers have discovered an entire galaxy cluster wrapped in a 20 million ...

The largest cloud of energetic particles ever seen was recently discovered, revealing new clues about galaxy cluster ...

At the heart of our galaxy lies a cosmic puzzle: although the Galactic Center is packed with star-making material, massive ...

In a dense galaxy cluster, NGC 4858 shows how cosmic winds strip gas, spark new stars, and shape stunning jellyfish-like ...

Astronomers analyzing data from NASA’s James Webb Space Telescope have uncovered hundreds of tiny galaxies that played key roles in a cosmic makeover that turned the early universe into the one we ...

According to observations from NASA’s Chandra X-ray Observatory, M62 also contains a large number of X-ray binaries, which ...

A vast, glowing halo enveloping a galaxy cluster has been discovered, defying expectations and pointing to turbulent cosmic ...

Astronomers have uncovered surprising new details about a galaxy that looks like a jellyfish—and even sports a pair of strange “bunny ears.” This galaxy, named NGC 4858, is racing through a distant ...

Wausau Pilot & Review This week offers stunning celestial sights for skywatchers in the Wausau area — from planetary pairings ...