News tagged with ultraviolet radiation

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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 ...

dateMay 29, 2009 in Genetics
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FDA debates tougher cancer warning on tanning beds

(AP) -- Just as millions head to tanning beds to prepare for spring break, the Food and Drug Administration will be debating how to toughen warnings that those sunlamps pose a cancer risk. Yes, sunburns are ...

dateJan 18, 2010 in Cancer
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The rose-red glow of star formation

The vivid red cloud in this new image from ESO's Very Large Telescope is a region of glowing hydrogen surrounding the star cluster NGC 371. This stellar nursery lies in our neighboring galaxy, the Small Magellanic ...

dateMar 30, 2011 in Astronomy
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More than skin deep, tanning product of sun's rays

People who remain pale and never tan can blame their distant ancestors for choosing to live in the northern reaches of the globe and those who easily achieve a deep tan can thank their ancestors for living in the subtropical ...

dateJun 21, 2010 in Other
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Transforming galaxies

(PhysOrg.com) -- Many of the Universe's galaxies are like our own, displaying beautiful spiral arms wrapping around a bright nucleus. Examples in this stunning image, taken with the Wide Field Camera 3 on ...

dateFeb 13, 2012 in Astronomy
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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.

dateFeb 25, 2009 in Astronomy
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A microbe's trick for staying young

Researchers have discovered a microbe that stays forever young by rejuvenating every time it reproduces. The findings, published in Current Biology, provide fundamental insights into the mechanisms of aging.

dateSep 12, 2013 in Cell & Microbiology
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A new class of extragalactic objects

A blazar is a galaxy with an intensely bright central nucleus containing a supermassive black hole, much like a quasar. The difference is that a blazar can emit light with extremely high energy gamma rays ...

dateOct 29, 2012 in Astronomy
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