Leo P, a tiny galaxy, stopped making stars after the universe’s reionization. Unlike most galaxies, it restarted billions of ...

The University of Arizona will contribute to a NASA space mission to study the atmospheres of planets outside of our solar ...

Astronomers compile a large sample of an unusual class of objects in an effort to connect the dots to the early universe.

Ever since NASA’s James Webb Space Telescope was launched, it’s been revealing more about the universe than even most ...

The Phantom Galaxy (M74) has been imaged in infrared and optical light using the James Webb Space Telescope and Hubble Space ...

A 'prelude to a supernova' is how NASA describes this stunning new James Webb Space Telescope image of Wolf-Rayet Star WR 124 ...

Hubble Space Telescope mapped Andromeda, revealing a chaotic history shaped by mergers. A 2.5-billion-pixel mosaic shows 200 ...