Caught in the act: galaxies turning into quasars

Astronomers have identified six previously mild-mannered galaxies that suddenly transformed into voracious quasars, erupting in feeding frenzies powered by supermassive black holes.

Astronomers discover 83 supermassive black holes

Astronomers from Japan, Taiwan and U.S. have discovered 83 quasars powered by supermassive black holes in the distant universe, from a time when the universe was only 5 percent of its age.

Gamma rays seen from exotic Milky Way object

For the first time, an international collaboration of scientists has detected highly energetic light coming from the outermost regions of an unusual star system within our own galaxy.

Hundreds of galaxies hidden in quasar’s 46-billion-sun glare

MIT researchers have found the quasar, PKS 1353-341, is simply so bright it drowns out the light from hundreds of galaxies in a surrounding cluster.

Last of universe's missing ordinary matter

Until now, astrophysicists had only been able to locate about two-thirds of the ordinary matter. In the new research, an international team pinned down the missing third.

The most distant supermassive black hole ever observed

This black hole resides in a luminous quasar and its light reaches us from when the Universe was only 5 percent of its current age — just 690 million years after the Big Bang.

Astronomers make the largest map of the Universe yet

Astronomers with the Sloan Digital Sky Survey (SDSS) have created the first map of the large-scale structure of the Universe based entirely on the positions of quasars.

Discovery nearly doubles known quasars from the ancient universe

New work from a team led by Carnegie’s Eduardo Bañados has discovered 63 new quasars from when the universe was only a billion years old.

Ten Trillion-Degree Quasar Astonishes Astronomers

A newly deployed space telescope has struck pay dirt almost immediately, discovering a quasar - a superheated region of dust and gas around a black hole - that is releasing jets at least seventy times hotter than was thought possible.

Quasars slowed star formation, new research shows: Study finding first observed evidence of galactic-wind phenomenon

Research has found new persuasive evidence that could help solve a longstanding mystery in astrophysics: why did the pace of star formation in the universe slow down some 11 billion years ago?

Doomed quasar is heading for a powerful explosion

PKS 1302-102 is one of the few known quasars with a pair of black holes within its accretion disc. It is also a curious case for astronomers as it will produce a powerful explosion when these two black holes merge. The scientists trying to determine the scale of this merger estimate that it could result in an enormous release of energy.

Most distant quasar found

A team of European astronomers has used ESO’s Very Large Telescope and a host of other telescopes to discover and study the most distant quasar found to date. This brilliant beacon, powered by a black hole with a mass two billion times that of the Sun, is by far the brightest object yet discovered in the early Universe. The results will appear in the 30 June 2011 issue of the journal Nature.