Using observations from NASA's Rossi X-ray Timing Explorer (RXTE) satellite and the National Science Foundation's (NSF) Very Long Baseline Array (VLBA) radio telescope, an international team of astronomers has identified the moment when a black hole in our galaxy launched superfast knots of gas into space.
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(PhysOrg.com) -- As a quantum theory of gravity, loop quantum gravity could potentially solve one of the biggest problems in physics: reconciling general relativity and quantum mechanics. 
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Black hole extravaganza in 1080p. From ESOcast. Not long ago, watching something being ripped apart as it falls towards a giant black hole would be science fiction. This is now reality.
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Astronomers have spotted a cloud of gas with four times the mass of the Earth on a near-collision course with the Milky Way's central black hole.
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In the first billion years after the Big Bang, the universe was a smaller, emptier place, without the huge galaxies that dominate today. But there were already supermassive black holes that had grown shockingly huge by gorging themselves on gas.
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(PhysOrg.com) -- Researchers at Carnegie Mellon University's Bruce and Astrid McWilliams Center for Cosmology have discovered what caused the rapid growth of early supermassive black holes — a steady diet of cold, fast food.
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Observations with the Gemini North telescope in Hawai‘i reveal evidence for what astronomers are calling the largest black holes ever measured in our nearby cosmological neighborhood. This result is crucial in explaining the long-standing mystery of where the largest black holes are hiding in our present-day universe.
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Astronomers have long wondered why it is that the super-massive black hole in the center of our galaxy, known as Sagittarius A*, containing about 4 million times the mass of our Sun is relatively quiet.
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Our galaxy is a relatively quiet neighbourhood with the supermassive black hole at its heart gently dozing: or is it?
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With a lot of help from Flipper, scientists have a better shot at understanding phenomena like black holes and supernovae.
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Astronomers studying a black hole caught the most detailed look yet at the extreme environment surrounding its jets. They used NASA's WISE space telescope to make the find.
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A new X-ray telescope developed by an international team of scientists will float within the Earth’s atmosphere on a one-day mission to calculate how fast black holes spin.
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![[VIDEO]-Feeling the Ripples of Black Hole Collisions | Science News | Scoop.it](https://img.scoop.it/8wN9f_aWbOqDK8tfSz2BVzl72eJkfbmt4t8yenImKBVvK0kTmF0xjctABnaLJIm9)
Within a decade we should have actual observations of black holes going "bump in the night."...
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This animation compares the X-ray 'heartbeats' of GRS 1915 and IGR J17091, two This animation compares the X-ray 'heartbeats' of GRS 1915 and IGR J17091, two black holes that ingest gas from companion stars. GRS 1915 has nearly five times the mass of IGR J17091, which at three solar masses may be the smallest black hole known. A fly-through relates the heartbeats to hypothesized changes in the black hole's jet and disk.
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A powerful computer simulation has shown researchers that supermassive black holes, with masses billions of times greater than our sun, did exist at the dawn of the universe, while most others took over 13 billion years to develop.
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The universe's first supermassive black holes likely grew so big so fast by munching on a steady stream of cold gas, a new study suggests. The find could explain how the black holes became so big so soon after the Big Bang.
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Following the discovery of two supermassive black holes, a quick reminder of the dangers of getting too close to a collapsing star...
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Scientists have found the biggest black holes known to exist — each one 10 billion times the size of our sun.
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Astronomers have measured the vital statistics of the black hole living in the famous Cygnus X-1 binary system to a very high precision.
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Conventional wisdom would say that blocking a hole would prevent light from going through it, but Princeton University engineers have discovered the opposite to be true.
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Over three decades ago, Stephen Hawking placed -- and eventually lost – a bet against the existence of a black hole in Cygnus X-1, the first X-ray source widely accepted to be a black hole candidate. The object was a...
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