News articles tagged with 'radiation' (Page 53)
RIT study confirms supermassive black holes produce powerful galaxy-shaping winds
— 31 Oct 2007 22:50 | AstronomySupermassive black holes can produce powerful winds that shape a galaxy and determine their own growth, confirms a group of scientists from Rochester Institute of Technology. The RIT…
Origin of breathable atmosphere on Earth found
— 28 Oct 2007 18:25 | Geology and palaeontologyOhio State University geologists and their colleagues have uncovered evidence of when Earth may have first supported an oxygen-rich atmosphere similar to the one we breathe today. The…
Scientists discover possible cosmic defect, remnant from Big Bang
— 25 Oct 2007 21:51 | AstronomyScientists from the Institute of Physics of Cantabria (IFCA) and the University of Cambridge may have discovered an example of a cosmic defect, a remnant from the Big Bang called a…
Extract of broccoli sprouts protects against UV radiation
— 23 Oct 2007 00:22 | BiologyA team of Johns Hopkins scientists reports in this week's issue of the Proceedings of the National Academy of Sciences that humans can be protected against the damaging effects of ultraviolet…
Astronomers get their hands dirty as they lift the veil on galactic dust
— 13 Oct 2007 11:11 | AstronomyThere is more to a grain of dust than meets the eye, at least for astronomers as they attempt to probe deeper into distant galaxies. Until now dust has been a nuisance because it has…
Major step toward knowing origin of cosmic rays
— 10 Oct 2007 08:30 | AstronomyRecent observations from NASA and Japanese X-ray observatories have helped clarify one of the long-standing mysteries in astronomy - the origin of cosmic rays. Outer space is a vast…
Taming tiny, unruly waves for nano optics
— 8 Oct 2007 15:31 | PhysicsNanoscale devices present a unique challenge to any optical technology - there's just not enough room for light to travel in a straight line. On the nanoscale, energy may be produced…
Solar cells brave desert heat and snow
— 6 Oct 2007 18:06 | PhysicsSolar modules must stand up to UV radiation, rain, snow and heat. To find out where their weak points lie, outdoor weathering stations are being set up at sites exposed to extreme climatic…
Tough enough for Mars, but Deinococcus is from Earth
— 26 Sep 2007 05:22 | BiologyResults of a recent study titled 'Deinococcus geothermalis: The Pool of Extreme Radiation Resistance Genes Shrinks,' will be published in the current edition of PLoS ONE. The study…
Tardigrades from Sweden first animal in open space conditions
— 22 Sep 2007 13:39 | BiologyExposing organisms to the space environment provides us with knowledge of how living cells are impacted by the stress factors out there. And the few groups of animals that have the…