(Phys.org)—Our Milky Way is a spiral galaxy—a pinwheel-shaped collection of stars, gas and dust. It has a central bar and two major spiral arms that wrap around its disk. Since we view the Milky Way from the inside, its ...
Astronomy
Jan 8, 2013
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(Phys.org) -- At the core of most galaxies including our own Milky Way is a massive black hole. Material falling into the environment of the black hole heats up, and can radiate dramatically, sometimes also powering the ejection ...
Astronomy
Aug 10, 2012
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Dust and aerosol pollution from Asia travels across the ocean and sullies the air in the United States and Canada, possibly worsening the effects of climate change, a study showed Thursday.
Earth Sciences
Aug 2, 2012
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(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 obscure the galaxy's ...
Astronomy
May 31, 2012
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(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 of millions of ...
Astronomy
May 16, 2012
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(PhysOrg.com) -- Small dust particles in a disk of gas around a young star, according to current models, gradually coagulate during the first million years until kilometer-sized objects are formed. These in turn coalesce ...
Astronomy
Mar 26, 2012
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Electric cars have been heralded as environmentally friendly, but findings from University of Tennessee, Knoxville, researchers show that electric cars in China have an overall impact on pollution that could be more harmful ...
Environment
Feb 13, 2012
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Queensland University of Technology (QUT) researchers have identified a silver lining in the cloud of red dust that enveloped much of eastern Australia two years ago.
Earth Sciences
Sep 23, 2011
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(PhysOrg.com) -- The H.E.S.S. telescope system in Namibia discovered a new source of very-high-energy gamma-rays from the direction of the globular cluster Terzan 5. Being very likely located in the outer parts of Terzan ...
Astronomy
Jun 24, 2011
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On Earth, we tend to find dust nothing more than a nuisance that blankets our furniture and causes us to sneeze. Cosmic dust can also be a hindrance to astronomers because cameras using visible light cannot see through it. ...
Astronomy
Dec 1, 2009
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