Quasars acting as strong gravitational lenses are among the rarest finds in astronomy. Out of nearly 300,000 quasars ...

An international team of astronomers have employed the Spektr-RG spacecraft and various ground-based telescopes to ...

The Extended Baryon Oscillation Spectroscopic Survey (eBOSS), the world's largest galaxy survey, is part of Phase IV of the Sloan Digital Sky Survey (SDSS), a major multi-spectral imaging and ...

The XMM-Newton space observatory has set a new record for the most distant X-rays ever found by detecting X-rays from the farthest known quasar. With a redshift of 5.8, the quasar provides a glimpse ...

A team of European astronomers has used the European Southern Observatory’s (ESO) Very Large Telescope (VLT) and a host of other telescopes to discover and study the most distant quasar found to date.

There are several different kinds of redshift that we encounter in the universe. Those three are ‘gravitational’, ‘doppler‘ and ‘cosmological‘. Before looking at two examples, it is best to have a ...

Scientists can’t travel deep space the way Columbus sailed and charted the New World or Lewis and Clark mapped the West. But, researchers at Case Western Reserve University and two partnering ...

Perhaps one of the most perplexing mysteries in current astrophysics is the science behind Quasars. Quasars, or “quasi-stellar radio sources” are the brightest and most distant star-like objects in ...

IT is often assumed that quasars are partaking in the general expansion of the substratum of an isotropic universe. This hypothesis requires that those quasars possessing any particular observational ...