Wednesday, 10 October 2012

Aurora light

Solar Storm is strong and Aurora Polaris
seen at latitude north 35 degrees. during the extremely powerful solar storm recorded, north light , Aurora polaris was seen around equator. South light, Aurora Australasia is a smaller events.
Wishing you good luck in viewing Aurora.
Try youtube aurora goodle search.
quoted.
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Radiation hazards to humans (especially during day time)Intense solar flares release very-high-energy particles that can cause radiation poisoning to humans (and mammals in general) in the same way as low-energy radiation from nuclear blasts.Earth's
atmosphere and magnetosphere allow adequate protection at ground level, but astronauts in space are subject to potentially lethal doses of radiation. The penetration of high-energy particles into living cells can cause chromosome damage, cancer, and a host of other health problems. Large doses can be fatal immediately.Solar
protons with energies greater than 30 MeV are particularly hazardous. In October 1989, the Sun produced enough energetic particles that, if an astronaut were to have been standing on the Moon at the time, wearing only a space suit and caught out in the brunt of the storm, he would probably have died; the expected dose would be about 7000 rem[citation needed]. Note that astronauts who had time to gain safety in a shelter beneath moon soil would have absorbed only slight amounts of radiation.The cosmonauts on the
Mir station were subjected to daily doses of about twice the yearly dose on the ground, and during the solar storm at the end of 1989 they absorbed their full-year radiation dose limit in just a few hours.[citation needed]
Solar proton events can also produce elevated radiation aboard aircraft flying at high altitudes.

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