News tagged with ultraviolet radiation
Related topics: massive stars , stars , young stars
Putting Plankton in Perspective, from Sea to Sky (w/ Video)
(PhysOrg.com) -- From the time he was 21 and working toward his Ph.D., Mike Behrenfeld has been observing phytoplankton -- floating ocean plants that have a global impact. Observing these tiny plants under ...
Space & Earth / Earth Sciences
Jul 24, 2009 |
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Researchers identify genes that cause melanoma
Scientists from the Queensland Institute of Medical Research (QIMR) have found two new genes that together double a person's risk of developing melanoma.
Jul 06, 2009 |
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How oxidative stress may help prolong life
(PhysOrg.com) -- Oxidative stress has been linked to aging, cancer and other diseases in humans. Paradoxically, researchers have suggested that small exposure to oxidative conditions may actually offer protection ...
May 29, 2009 |
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Lettuce gets a healthy suntan
Salad dressing aside, a pile of spinach has more nutritional value than a wedge of iceberg lettuce. That's because darker colors in leafy vegetables are often signs of antioxidants that are thought to have a variety of health ...
May 18, 2009 |
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Hubble Photographs a Planetary Nebula to Commemorate Decommissioning of Super Camera
(PhysOrg.com) -- The Hubble community bids farewell to the soon-to-be decommissioned Wide Field and Planetary Camera 2 onboard NASA's Hubble Space Telescope. In tribute to Hubble's longest-running optical ...
May 11, 2009 |
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Hubble to receive high-tech James Webb Space Telescope technology
Scientists and engineers now creating new technologies for NASA's James Webb Space Telescope, have realized they can be used to enhance the Hubble's Advanced Camera for Surveys (ACS) in the upcoming servicing ...
Space & Earth / Space Exploration
May 08, 2009 |
4.8 / 5 (11) |
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Level of cellular stress determines longevity of retinal cells
(PhysOrg.com) -- Stress can be adaptive. It can make you sharper, help you focus and it can even improve your performance. But too much of it can tax cells to the point where they can no longer cope and slowly ...
Medicine & Health / Medical research
Apr 28, 2009 |
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Solar wind tans young asteroids
A new study published in Nature this week reveals that asteroid surfaces age and redden much faster than previously thought -- in less than a million years, the blink of an eye for an asteroid. This study ...
Space & Earth / Space Exploration
Apr 22, 2009 |
4 / 5 (4) |
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Antioxidant found in berries, other foods prevents UV skin damage that leads to wrinkles
Using a topical application of the antioxidant ellagic acid, researchers at Hallym University in the Republic of Korea markedly prevented collagen destruction and inflammatory response - major causes of wrinkles -- in both ...
Medicine & Health / Medical research
Apr 21, 2009 |
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Get Your Vitamin D From Food or Supplements -- Not Tanning Beds
(PhysOrg.com) -- There’s no question that vitamin D does the body good, but tanning beds and unprotected sun exposure are not the best ways to get it, according to dermatologists with UC Physicians.
Apr 09, 2009 |
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Discovery of New Microorganisms in the Stratosphere
(PhysOrg.com) -- Three new species of bacteria, which are not found on Earth and which are highly resistant to ultra-violet radiation, have been discovered in the upper stratosphere by Indian scientists. One ...
Mar 18, 2009 |
4.7 / 5 (15) |
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Into the eye of the helix
(PhysOrg.com) -- The Helix Nebula, NGC 7293, lies about 700 light-years away in the constellation of Aquarius (the Water Bearer). It is one of the closest and most spectacular examples of a planetary nebula.
Feb 25, 2009 |
3.7 / 5 (7) |
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Team develops new metamaterial device
An engineered metamaterial proved it can function as a state-of-the-art device in the complex terahertz range of the electromagnetic spectrum, setting a standard of performance for modulating tiny waves of radiation, according ...
Feb 24, 2009 |
4.7 / 5 (6) |
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New stars from old gas surprise astronomers
(PhysOrg.com) -- Evidence of star birth within a cloud of primordial gas has given astronomers a glimpse of a previously unknown mode of galaxy formation. The cloud, known as the Leo Ring, appears to lack ...
Feb 18, 2009 |
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