Quasars are one of astronomy's most important tools -- so why do so many of them seem to be winking out of the sky?
A new telescope under construction near Sicily's Mt. Etna is being designed to track quasars and supernovae, but it may give us a bird's eye view deep into the interior of the volcano, too.
How do black holes, from which nothing can escape, wind up giving rise to the brightest objects in the Universe?
New Cherenkov telescope for astrophysics could image Mt. Etna's innards
In 2012, researchers using the European Southern Observatory's Very Large Telescope in Paranal, Chile – the world's most advanced visible-light astronomical observatory, discovered a quasar known as SDSS J1106+1939 with the most energetic outflow ever, a finding that may answer...
In the latest spotlight on long-resolved comic book plots, CSBG looks at a long-standing X-Men mystery resolved in the pages of... "Quasar"?
In their latest spotlight on long-resolved comic book plots, CSBG looks at an X-Men mystery that lasted over a decade only to be resolved in the pages of...Quasar?
Earlier this year, astronomers discovered what appeared to be a pair of supermassive black holes circling toward a collision so powerful it would send a burst of gravitational waves surging through the fabric of space-time itself. Astronomers at Columbia University...
Astronomers have provided additional evidence that a pair of closely orbiting black holes deep in the Virgo constellation is causing the rhythmic flashes of light coming from quasar PG 1302-102. Based on calculations of the pair's mass...Show More Summary
Whoa, double black hole! (Image: Space Telescope Science Institute) Quasars are unbelievably bright. When astronomers first found them, they thought they might be really, really luminous stars—they can be brighter than entire galaxies—but, in fact, their brilliance comes from a different source, the black hole at the center. Show More Summary
Astrophysicists have found two supermassive black holes in Markarian 231, the nearest quasar to Earth, using observations from NASA's Hubble Space Telescope. The discovery of two supermassive black holes--one larger one and a second, smaller one--are evidence of a binary...
The nearest quasar to Earth was most likely generated by two gravitationally bound supermassive black holes, according to the findings published by the Astrophysical Journal.
Astrophysicists have found two supermassive black holes in Markarian 231, the nearest quasar to Earth. The discovery of two supermassive black holes -- one larger one and a second, smaller one -- are evidence of a binary black hole and suggests that supermassive black holes assemble their masses through violent mergers.
Using the W. M. Keck Observatory in Hawaii, a group of astronomers of the Max Planck Institute for Astronomy have discovered the first quadruple quasar: four rare active black holes situated in close proximity to one another. The quartet resides...
It's not every day scientists get to watch a galaxy being born. But thanks in part to the bright light of a quasar, astronomers say they've identified a swirling disk of gas that's a galaxy in the making - as well as the strand of the universe's cosmic web that's been feeding it.
When the first galaxies started to form a few hundred million years after the Big Bang, the Universe was full of a fog of hydrogen gas. But as more and more brilliant sources -- both stars and quasars powered by...
When the first galaxies started to form a few hundred million years after the Big Bang, the Universe was full of a fog of hydrogen gas. But as more and more brilliant sources -- both stars and quasars powered by huge black holes -- started to shine they cleared away the mist and made the Universe transparent to ultraviolet light. read more
photos by Greg Cristman Henry Grimes / Roscoe Mitchell @ Vision Festival 7/7/2015 NYC's Vision Festival, celebrating its 20th year, has been going on all week at Judson Memorial Church with an eclectic lineup of music, dance and poetry. Things...
Dark objects affecting the radio signals from quasars and pulsars could be strangely dense blobs of plasma. But if so, how did they get there?
Hubble shows that quasars get their fuel when their host galaxies collide.