Astronomers have discovered the brightest object ever observed in the universe. Astronomers discovered a quasar, which is the "brightest of its kind" and the "most luminous object ever observed ...

Quasar 3C 273, which was the first of its kind discovered, is as luminous as 4 trillion suns or 100 times brighter than the entire Milky Way. "For Hubble, ...

NuSTAR Observations of a Varying-flux Quasar in the Epoch of Reionization. The Astrophysical Journal Letters , 2025; 979 (1): L6 DOI: 10.3847/2041-8213/ad94ee Cite This Page : ...

The map is based on a catalog of 1,295,502 quasar positions and redshifts, and is called "Quaia," a portmanteau of the words "quasar" and "Gaia," referring to the European Space Agency's Gaia ...

A quasar is a blindingly bright galaxy core — brighter than all of the galaxy's starlight combined, according to NASA.Through telescopes, these sometimes look like a single star in the sky, but ...

A quasar that close could have caused a lull in star formation that astronomers might someday detect by measuring precise ages for our galaxy’s oldest stars (SN: 3/23/22).

Astronomers first discovered quasars, the brightest and most powerful objects in the universe, 60 years ago. Now, scientists think they have unlocked the mystery behind what ignites these ...

For the study, the researchers compared NuSTAR observations of a distant quasar — designated J1429 +5447 — with unrelated observations of four months earlier by the Chandra X-ray telescope. The ...