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 : ...

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 witnessed two galaxies engaged in an intense deep-space battle for the first time. Watch the “cosmic joust” in action.

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 ...

The universe’s brightest object is a quasar in a distant galaxy that’s powered by the fastest-growing black hole ever recorded, according to a new study.

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 ...

Astronomers have discovered the longest radio jet so far in the early universe, spanning 200,000 light-years. Credit: NOIRLab / NSF / AURA / M. Garlick illustration Scientists have found a quasar ...

Beyond its significance as the oldest-known X-ray quasar, UHZ1 offers compelling proof that the early universe is “seeded” with heavy black hole seeds with large birth masses that likely formed from ...

A lack of Lyman alpha emitters within 5Mpc of a luminous quasar in an overdensity at z=6.9: Potential evidence of negative quasar feedback at protocluster scales. Astronomy & Astrophysics , 2024 ...

Quasar Markets aims to revolutionize the financial landscape by seamlessly integrating cutting-edge artificial intelligence (AI) technologies into its financial services. In the dynamic ...

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 ...