Blue and white stars shine brilliantly against a crimson background of glowing gas in this July 3, 2026, image of stellar ...

A faraway galaxy has been caught blowing away the cosmic fog of hydrogen that filled the universe once upon a time.

Researchers say the surprising discovery of the faraway galaxy MXDFz4.4 could help explain how the cosmos went from opaque to ...

This image from NASA's Hubble Space Telescope showcases Messier 3 (M3), one of the Milky Way's most massive globular clusters ...

X-ray observations of the cluster revealed that it is made up of two galaxy clusters merging along our line of sight.

The cluster is very bright at X-ray wavelengths and is one of the most extensively studied galaxy clusters at X-ray and radio ...

Since it launched into space on April 24, 1990, the Hubble Space Telescope has been an invaluable instrument to astronomers in unraveling the mysteries of the universe. As it orbits the Earth from 340 ...

NASA offers a simple way to see which stunning celestial image the Hubble Space Telescope captured on your birthday.