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Ep. 187: History of Astronomy, Part 5: The 20th Century

Many of the modern ideas in astronomy happened in just the 20th century: dark matter, the Big Bang, inflation, quasars, black holes. So many discoveries in one important century.

Ep. 98: Quasars

Last week we talked about galaxies in general, and hinted at the most violent and energetic ones out there: active galaxies. Quasars have been a mystery for half a century; what kind of object could throw out more radiation than an entire galaxy? A black hole, it turns out, with the mass of hundreds of millions of suns performs this feat. Show More Summary

The Hubble Space Telescope Delivers Images of Ethereal Green Quasar 'Phantoms'

The Hubble Space Telescope has captured new images of the strange cosmic ghosts lurking at the outside edges of some distant galaxiesdubbed "green goblins." These are twisted, gnarled clouds of energized material tens of thousands of light-years long, deformed by the immense gravitational forces of the nearby galaxy. Show More Summary

Quasar backlighting gives weight to Andromeda galaxy

Astronomers find 40 billion suns' worth of gas hiding in our neighbouring galaxy's halo – and get insight into how galaxies collect material over time...

Hubble spots ghosts of quasars past

3 weeks agoTechnology : Tech Talk

The space telescope caught the haunting remnants of a collision between two distant galaxies

Colossal Ghostly Structures Found Shrouding Galaxies --Powered by Ancient Quasars

NASA's Hubble Space Telescope has photographed a set of wispy, goblin-green objects that are the ephemeral ghosts of quasars that flickered to life and then faded. The glowing structures have looping, helical, and braided shapes. "They don't fit a single...

Hubble finds phantom objects near dead quasars

NASA's Hubble Space Telescope has photographed a set of wispy, goblin-green objects that are the ephemeral ghosts of quasars that flickered to life and then faded. The eight unusual looped structures may offer insights into the puzzling behaviors of galaxies with energetic cores.

Hubble discovers ghosts of quasars past

a set of enigmatic quasar ghosts -- ethereal green objects which mark the graves of these objects that flickered to life and then faded. The eight unusual looped structures orbit their host galaxies and glow in a bright and eerie goblin-green hue. They offer new insights into the turbulent pasts of these galaxies. read more

Meet The Peugeot Quasar: A Group B Supercar For The Road

last monthVehicles / Cars : Jalopnik

Back when Group B rally cars were running virtually unrestricted, faster than sense or safety, newscasters called them 'supercars.' What if you took that Group B tech and applied it to a traditional supercar concept? Read more...

Java IO Benchmark: Quasar vs. Async ForkJoinPool vs. managedBlock

How do Async ForkJoinPool, managedBlock and Quasar perform in an IO scenario?

Monster black hole discovered at cosmic dawn

The discovery of the brightest quasar in the early universe, powered by the most massive black hole yet known at that time presents a puzzle to researchers: How could something so massive and luminous form so early in the universe, only 900 million years after the Big Bang?

Missing Light of the Visible Universe --"Is It Coming from Some Exotic New Source?" (Weekend Feature)

"The most exciting possibility is that the missing photons are coming from some exotic new source, not galaxies or quasars at all," said Neal Katz of the University of Massachusetts at Amherst. For example, the mysterious dark matter, which holds...

Scientists find brightest night light circling impossibly huge black hole

2 months agoTechnology / Gadgets : Gizmag

Astronomers have discovered a distant, massive and ancient black hole that calls into question current models for the early expansion of the universe. A team of scientists from China and Arizona spotted the brightest quasar from theShow More Summary

Ancient Black Hole Discovered --12 Billion Times Mass of the Sun!

Astronomers have found a huge black hole which was powering the brightest object in the early universe. The black hole's mass is 12 billion solar masses, and the surrounding quasar pumped out 10^15 times the sun's energy. An international team...

Biggest Light Show In The Known Universe!

It’s a black hole 12.8 billion light years from Earth, formed just 900 million years after the Big Bang, and 12 billion times the size of the sun. Astrophysicists are lovin’ it: The extraordinary object is at the centre of a quasar – an intensely powerful galactic radiation source – with a million billion times [...]

Big, bright quasar from ancient universe stuns scientists

Deep in the universe’s past, astronomers have discovered a luminous quasar powered by an enormous black hole that contains the mass of 12 billion suns. The incredibly bright object is ancient -- shining when the universe was only 875 million years old -- and way bigger than it should be...

This Enormous, Ancient Black Hole Defies the Laws of Physics

Today, astronomers announced the discovery of a gargantuan black hole powering an ultra-luminous quasar the brightest and most powerful objects in the universe. But its not just any old black hole. According to University of ArizonaShow More Summary

Space telescopes uncover supermassive black hole winds

2 months agoTechnology / Gadgets : Gizmag

Supermassive black holes are titanic oddities. Usually sited at the core of galaxies and various high-energy phenomena such as quasars, their mass can be anywhere from that of a hundred thousand to billions of suns. Now observationsShow More Summary

Fate of Galaxies Linked to Their Supermassive Black Hole

The evolution of galaxies is connected to the growth of supermassive black holes in their centers. During the quasar phase, a huge luminosity is released as matter falls onto the black hole, and radiation-driven winds can transfer most of this...

Giving shape to black holes' intense winds

By looking at the speed of ambient gas spewing out from a well-known quasar, astronomers are gaining insight into how black holes and their host galaxies might have evolved at the same time.

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