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A Cosmic Pas de Trois: Triple-quasar system may signal galaxy mergers
01-20-2007 · Science News OnlineAstronomers have discovered the first example of a trio of quasars, the brilliant beacons of light that seem to be fueled by supermassive black holes at the centers of galaxies.
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Keywords: cosmic, pas, trois, triple-quasar, system, signal, galaxy, mergers, troi, triple, quasar, merger
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- Anatomy of a cosmic bird
12-20-2007 · EurekAlert!
Using ESO's Very Large Telescope, an international team of astronomers has discovered and imaged a stunning rare case of a triple merger of galaxies. This system, which astronomers have dubbed "The Bird" -- albeit it also bears resemblance with a cosmic Tinker Bell -- is composed of two massive spiral galaxies and a third irregular galaxy.
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- Northern Exposure: The inhospitable side of the galaxy?
04-21-2007 · Science News Online
Our solar system's periodic motion from one side of the galaxy to the other could expose life on Earth to massive amounts of cosmic rays and cause recurring, catastrophic mass extinctions.
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- Astronomers find triple interactions of supermassive black holes to be common in early universe
01-08-2007 · EurekAlert!
New cosmological computer simulations produced by a team of astronomers from Northwestern University, Harvard University and the University of Michigan show for the first time that supermassive black holes, which exist at the centers of nearly all galaxies, often come together during triple galaxy interactions. The theoretical results are of special interest because of the recent discovery by astronomers at the California Institute of Technology of a possible triple quasar.
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- Gargantuan galaxy NGC 1132 -- a cosmic fossil?
02-05-2008 · EurekAlert!
The NASA/ESA Hubble Space Telescope has captured a new image of the galaxy NGC 1132 which is, most likely, a cosmic fossil -- the aftermath of an enormous multi-galactic pile-up, where the carnage of collision after collision has built up a brilliant but fuzzy giant elliptical galaxy far outshining typical galaxies.
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- Immune cell communication key to hunting viruses, Jefferson immunologists show
10-25-2006 · EurekAlert!
Immunologists have used nanotechnology to create a novel "biosensor" to solve in part a perplexing problem in immunology: how the immune system's killer T-cells hunt down invading viruses. They have found that surprisingly little virus can turn on killer T-cells, thanks to some complicated communication among "antigen presenting" proteins that recognize and attach to the virus, making it visible to the immune system. Presenting proteins cooperate, spreading a signal among receptors and boosting T-cell response.
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- Hubble spies shells of sparkling stars around quasar
10-25-2007 · EurekAlert!
New images taken with NASA's Hubble Space Telescope -- part of a research project led by astrophysicist Gabriela Canalizo at the University of California, Riverside -- have revealed the wild side of an elliptical galaxy, nearly two billion light-years away, that previously had been considered mild-mannered.
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- Enceladus, a moon of Saturn, is a 'cosmic graffiti artist,' astronomers discover
02-08-2007 · EurekAlert!
Astronomers from the University of Virginia and other institutions have found that Enceladus, the sixth-largest moon of Saturn, is a "cosmic graffiti artist," pelting the surfaces of at least 11 other moons of Saturn with ice particles sprayed from its spewing surface geysers. This ice sandblasts the other moons, creating a reflective surface that makes them among the brightest bodies in the solar system.
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- Galactic spider
11-04-2006 · Science News Online
A Hubble Space Telescope image reveals a large galaxy in the early universe assembling from the merger of smaller ones.
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- Astronomers discover scaled-down Jupiter and Saturn in a faraway solar system like our own
02-14-2008 · EurekAlert!
An international team of astronomers has discovered two planets that resemble smaller versions of Jupiter and Saturn in a solar system nearly 5,000 light years away. The find suggests that our galaxy hosts many planetary systems like our own, said Scott Gaudi, assistant professor of astronomy at Ohio State University.
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- Hubble finds strong contender for galaxy distance record
02-12-2008 · EurekAlert!
The NASA/ESA Hubble Space Telescope, with a boost from a natural "zoom lens," has found the strongest evidence so far for a galaxy with a redshift significantly above 7. It is likely to be one of the youngest and brightest galaxies ever seen right after the cosmic "dark ages," just 700 million years after the beginning of our universe (redshift ~7.6).
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