News tagged with dark holes
'Cosmic mirages' confirm accelerated cosmic expansion
(Phys.org) -- An international team of researchers led by Masamune Oguri at Kavli IPMU and Naohisa Inada at Nara National College of Technology conduced an unprecedented survey of gravitationally lensed quasars, ...
Apr 11, 2012 |
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NASA's Galaxy Evolution explorer in standby mode
(PhysOrg.com) -- NASA's Galaxy Evolution Explorer, or Galex, was placed in standby mode today as engineers prepare to end mission operations, nearly nine years after the telescope's launch. The spacecraft ...
Space & Earth / Space Exploration
Feb 08, 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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The wild early lives of today's most massive galaxies
(PhysOrg.com) -- Using the APEX telescope, a team of astronomers has found the strongest link so far between the most powerful bursts of star formation in the early Universe, and the most massive galaxies ...
Jan 25, 2012 |
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NASA satellite could reveal if primordial black holes are dark matter
(PhysOrg.com) -- The primary objective of NASA’s Kepler satellite, which was launched in March 2009 to orbit the Sun, is to search for Earth-like planets in a portion of the Milky Way galaxy. But now ...
Dec 09, 2011 |
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German researchers discover exotic 'dark clusters' in their calculations
(PhysOrg.com) -- Theoretical physicists at the University of Bonn propose a new class of celestial bodies: “Dark Star Clusters”, consisting of many black holes and some stars orbiting around each other. So far, ...
Nov 08, 2011 |
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German scientists ready for the hunt on dark energy
The German and Russian partners of the new eROSITA X-ray space observatory have now agreed on how to split the data from the first four years of an all sky survey. This decision was announced today at the ...
Oct 20, 2011 |
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600 mysteries in the night sky
NASA's Fermi team recently released the second catalog of gamma-ray sources detected by their satellite's Large Area Telescope (LAT). Of the 1873 sources found, nearly 600 are complete mysteries. No one knows ...
Oct 19, 2011 |
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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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Black hole, star collisions may illuminate universe's dark side
Scientists looking to capture evidence of dark matter -- the invisible substance thought to constitute much of the universe -- may find a helpful tool in the recent work of researchers from Princeton University ...
Sep 19, 2011 |
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Dark matter does not act as growth factor
(PhysOrg.com) -- Massive black holes have been found at the centers of almost all galaxies, where the largest galaxies – which are also the ones embedded in the largest halos of Dark Matter – harbor ...
Jan 26, 2011 |
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Cosmic magnifying lenses distort view of distant galaxies
Looking deep into space, and literally peering back in time, is like experiencing the universe in a house of mirrors where everything is distorted through a phenomenon called gravitational lensing. Gravitational ...
Jan 12, 2011 |
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Frozen secrets of the 'Ice Cube'
There's nothing like temperatures that can reach minus 100 degrees Fahrenheit to keep you on your toes.
Oct 27, 2010 |
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Astronomer leverages supercomputers to study black holes, galaxies
An Ohio State University astronomer is working to unlock some of the mysteries surrounding the formation of vast galaxies and the evolution of massive black holes with his own large constellation of silicon ...
Oct 14, 2010 |
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LHC lawsuit case dismissed by US court
(PhysOrg.com) -- A Hawaiian man's lawsuit to try to prevent operations of the Large Hadron Collider (LHC) has been dismissed due to a failure to show a "credible threat of harm," according to the judge. And, ...
Sep 13, 2010 |
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