A pair of quasars that existed when the universe was only 3 billion years old has been spotted by the Hubble Space Telescope.

"We would like to understand the difference between these systems, which holds the clue to understand just how many cosmic ...

"Interestingly, the quasar powering this massive radio jet does not have an extreme black hole mass compared to other quasars." ...

Abstract: Quasars in the Age of Time-Domain Astronomy: Black hole feeding, visible as quasars, is a critical ingredient in many fields from galaxy evolution to multi-messenger gravitational wave ...

These jets become elusive the farther back in time astronomers try to look because of the so-called cosmic microwave background. The ancient radiation, the earliest fossil of light from 380,000 years ...

Ancient quasars seen by the James Webb Space Telescope technically shouldn’t exist, but one rare type of dark matter could make sense of that.Ultra-self-interacting dark matter clumped into supposedly ...

Astronomers have discovered a massive, double-lobed radio jet stretching 200,000 light-years from a quasar that existed when ...

They found a type of ultra-powerful galaxy that gobbles up everything around it. Its energy is so intense that, if it were ...

As a result, they detected 19 strongly-lensed, dual and projected quasars. The finding was reported in a paper published Jan. 15 on the arXiv pre-print server. Quasars, or quasi-stellar objects ...

Making use of the Gemini North telescope, one half of the International Gemini Observatory, funded in part by the U.S. National Science Foundation and operated by NSF NOIRLab, astronomers have ...