For more than two decades, the quasar PHL 1811 has been considered the prototype of a rare class of "intrinsically X-ray weak ...

Artificial intelligence narrowed more than 800,000 quasar observations to seven strong candidates for an exceptionally rare ...

A galaxy far, far away: Measuring changes in the fundamental constants throughout the history of the universe is achieved by studying quasar light absorbed by foreground galaxies at different times.

Using observations from multiple powerful telescopes, a team of astronomers studied a red quasar nicknamed "the Hatchling" at ...

DESI collects spectra, the different frequencies of light that objects in space emit. That light tells researchers how far away the object is, meaning they can create a 3D map of the universe. This ...