The Sun radiates more than just life-sustaining light into the solar system. At irregular intervals, it also produces bursts of high-energy particles. These solar particles have energies that range from 30,000 electron volts to 30 billion electron...

Energy reaching the earth from the sun. At the outer surface of the atmosphere, intensity is a closely constant value of 1400 watts per square meter (2 calories per square centimeter per minute). 98% of the energy is in the wavelength range...

Solar radiation is radiant energy emitted by the sun from a nuclear fusion reaction that creates electromagnetic energy. The spectrum of solar radiation is close to that of a black body with a temperature of about 5800 K. About half of the radiation is...

Since the late 1970s, the amount of solar radiation during times of little sunspot activity has increased by nearly 0.05% per decade, according to a NASA-funded study. "This trend is important because, if sustained over many decades, it could cause significant climate change,"...

4425 Solar Radiation and Daylight Models, by T. Muneer. Second Edition. Elsevier-Butter-worth-Heinemann, Oxford 2004 (our copy from Elsevier Australia, 30-52 Smidmore Street, Marrickville NSW 2204). 345 pp., ill, index. Pbk. Price: $A 123.20. The author, who is on the staff of...

Lake Superior has been warming even faster than the climate around it since the late 1970s due to reduced ice cover, according to a study by professors at the University of Minnesota Duluth.Summer surface temperatures on the famously cold lake have increased about 4.5 degrees...

The peak of the next sunspot cycle is expected in late 2011 or mid-2012 _ potentially affecting airline flights, communications satellites and electrical transmissions. But forecasters can't agree on how intense it will be.A 12-member panel charged with forecasting the solar cycle said Wednesday it...