News tagged with hole
X-ray 'echoes' map a supermassive black hole's environs
(Phys.org) -- An international team of astronomers using data from the European Space Agency's (ESA) XMM-Newton satellite has identified a long-sought X-ray "echo" that promises a new way to probe supersized ...
6 hours ago |
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ALMA turns its eyes to Centaurus A
(Phys.org) -- A new image of the galaxy Centaurus A, made with the Atacama Large Millimeter/submillimeter Array (ALMA), shows how the observatory allows astronomers to see through the opaque dust lanes that ...
10 hours ago |
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Ghostly gamma-ray beams blast from Milky Way's center
(Phys.org) -- As galaxies go, our Milky Way is pretty quiet. Active galaxies have cores that glow brightly, powered by supermassive black holes swallowing material, and often spit twin jets in opposite directions. ...
May 29, 2012 |
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Australia hails surprise super-telescope decision
Australia has hailed a surprise decision giving it a role in a radio telescope project aimed at revolutionising astronomy, vowing to draw on its decades of experience in space science.
May 26, 2012 |
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NASA preparing to launch NuSTAR, its newest X-ray eyes
(Phys.org) -- NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR, is being prepared for the final journey to its launch pad on Kwajalein Atoll in the central Pacific Ocean. The mission will study everything ...
Space & Earth / Space Exploration
May 30, 2012 |
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Every black hole contains a new universe: A physicist presents a solution to present-day cosmic mysteries
Our universe may exist inside a black hole. This may sound strange, but it could actually be the best explanation of how the universe began, and what we observe today. It's a theory that has been explored ...
May 18, 2012 |
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A pinwheel in many colors
(Phys.org) -- This image of the Pinwheel Galaxy, or also known as M101, combines data in the infrared, visible, ultraviolet and X-rays from four of NASA's space-based telescopes. This multi-spectral view shows ...
May 25, 2012 |
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Environmental group measures methane seeps in the Arctic
(Phys.org) -- A team of researchers, led by Katey Walter Anthony, of the University of Alaska, has been studying and mapping so-called seeps, holes in lake ice near the edges of glaciers where methane is bubbling ...
Space & Earth / Earth Sciences
May 21, 2012 |
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Repulsive gravity as an alternative to dark energy (Part 2: In the quantum vacuum)
(PhysOrg.com) -- During the past few years, CERN physicist Dragan Hajdukovic has been investigating what he thinks may be a widely overlooked part of the cosmos: the quantum vacuum. He suggests that the quantum vacuum has ...
Feb 01, 2012 |
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Physicists propose test for loop quantum gravity
(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. But like all tentative ...
Jan 03, 2012 |
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Could primordial black holes be dark matter?
(PhysOrg.com) -- “We know that about 25% of the matter in the universe is dark matter, but we don’t know what it is,” Michael Kesden tells PhysOrg.com. “There are a number of different theories about what da ...
Sep 21, 2011 |
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Astrophysicists discover new heating source in cosmological structure formation
(Phys.org) -- So far, astrophysicists thought that super-massive black holes can only influence their immediate surroundings. A collaboration of scientists at the Heidelberg Institute for Theoretical Studies ...
May 15, 2012 |
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A planetary system that never was teaches about those that may be
While Kepler and similar missions are turning up planets by the fist full, there’s long been many places that astronomers haven’t expected to find planetary systems. The main places include regions ...
May 23, 2012 |
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A deeper look at Centaurus A
(Phys.org) -- The strange galaxy Centaurus A is pictured in a new image from the European Southern Observatory. With a total exposure time of more than 50 hours this is probably the deepest view of this peculiar ...
May 16, 2012 |
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Three-telescope interferometry allows astrophysicists to observe how black holes are fueled
(Phys.org) -- By combining the light of three powerful infrared telescopes, an international research team has observed the active accretion phase of a supermassive black hole in the center of a galaxy tens ...
May 16, 2012 |
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