(Phys.org) —Supernova remnants (SNRs) play a vital role in the lifecycle of dust in the interstellar medium. As shockwaves from supernovae sweep up interstellar material, they heat the gas and dust, and destroy a significant ...
Astronomy
Jun 27, 2014
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A new analysis of satellite data reveals a link between dust in North Africa and West Asia and stronger monsoons in India. The study shows that dust in the air absorbs sunlight west of India, warming the air and strengthening ...
Earth Sciences
Mar 16, 2014
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Dust, which affects weather and climate and can be hazardous to health, can be generated when sand or silt grains are either dislodged from the surface by other windblown grains (saltation) or lifted by wind directly (direct ...
Earth Sciences
Sep 3, 2013
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Top soil is rich in nutrients and carbon but is increasingly being blown away by events such as the 'Red Dawn' in Sydney in 2009.
Environment
Aug 2, 2013
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The amount of dust being blown across the landscape has increased over the last 17 years in large swaths of the West, according to a new study led by the University of Colorado Boulder.
Earth Sciences
Jun 10, 2013
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(Phys.org) —With this new view of a spectacular stellar nursery ESO is celebrating 15 years of the Very Large Telescope—the world's most advanced optical instrument. This picture reveals thick clumps of dust silhouetted ...
Astronomy
May 23, 2013
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As recently as 5,000 years ago, the Sahara—today a vast desert in northern Africa, spanning more than 3.5 million square miles—was a verdant landscape, with sprawling vegetation and numerous lakes. Ancient cave paintings ...
Earth Sciences
Apr 5, 2013
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(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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A controversial idea to brake global warming, first floated by the father of the hydrogen bomb, is affordable and technically feasible, but its environmental impact remains unknown, a trio of US scientists say.
Environment
Aug 30, 2012
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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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