Hubble finds giant objects near dead quasars
Hubble finds giant objects near dead quasars

NASA's Hubble space telescope has clicked a set of wispy, goblin-green objects that are the ephemeral ghosts of quasars that flickered to life and then faded.

Newly discovered 'monster black hole' is largest and brightest ever

A team of scientists has discovered the brightest quasar in the early universe, powered by the most massive black hole yet known at that time.

New class of telescope helps reveal existence of 'quiet' quasars
New class of telescope helps reveal existence of 'quiet' quasars

Scientists have discovered a group of 'quiet' quasars that evolved slowly, with the help of the Gran Telescopio Canarias (GTC) telescope.

Mystery behind brightest objects in universe solved
Mystery behind brightest objects in universe solved

Quasars are the brightest objects in the universe and display a mysterious diversity in their appearance that has puzzled astronomers for over two decades. Scientists believe that the mystery can now be solved.

What brightens up the universe?
What brightens up the universe?

 Does ultraviolet light, that bathes the cosmos, come from numerous but faint galaxies or from a smaller number of quasars? The answer may not be too far in the future.

Quasars over 1000 times brighter than Milky Way stars

Powered by massive black holes at the center of most known galaxies, quasars can emit enormous amounts of energy, up to a thousand times the total output of the hundreds of billions of stars in our entire Milky Way.

Quasars to help scientists map structure of universe

Researchers have found a possible way to map the spread and structure of the universe, guided by the light of quasars.

Most quasars powered by black holes live on snacks, not large meals

Quasars are the brilliant beacons of light that are powered by black holes feasting on captured material, and in the process, heating some of the matter to millions of degrees.

NASA’s Hubble discovers quasars acting as gravitational lenses

Quasars are among the brightest objects in the universe, far outshining the total starlight of their host galaxies.

Largest-ever 3D map of distant universe `created`

The map was made using light from 14K quasars with the 3rd Sloan Digital Sky Survey.