New JWST observations of the Phoenix Cluster of galaxies support a theory about star formation that other clusters challenge.

NASA's James Webb Space Telescope has spotted a tiny moon orbiting Uranus, expanding the number of the planet's known ...

The moon - which is yet to be named - was discovered using the James Webb Space Telescope, and is believed to be around six ...

Sixty percent of the oldest known galaxies seem to be rotating clockwise an asymmetry so extreme that one scientist described “any person looking at the image can see it.” The result, based on 263 ...

Scientists have discovered a new, elusive moon around Uranus, making it the 29th natural satellite known to orbit the ice ...

Astronomers are living in a golden age of bigger and better telescopes. But even our most advanced technology pales in comparison to the power of nat ...

A new image has revealed the clearest glimpse yet of an interstellar visitor zipping through our solar system. The Hubble ...

The oldest and most distant black hole known to scientists dates back 13.3 billion years ago, when our universe was still in ...

A new image from the NASA/ESA Hubble Space Telescope showcases detailed dusty clouds in the Tarantula Nebula, a massive ...