Last Thursday the sun emitted a powerful X-Flare as reported by Space.com:
To see an excellent video about what it takes to be an X-class solar flare, check out this video at NASA's site.
The sun is our major source of electromagnetic radiation (EMR), even though, according to YES I Can! Science (sadly now retired):
For current information on solar activity, give SolarHam a look.
Another source for information on what the sun's currently up to, especially its cyclic activity, is The Old Farmer's Almanac.
In Alaska there's the Geophysical Institute at University of Alaska Fairbanks sensing how the solar wind affects Earth’s ionosphere and magnetosphere and sharing the data it collects. Another project, called HAARp (High Frequency Active Auroral Research Program), also offered some interesting data, but it has been shut down due to local distrust. It also became the target of a conspiracy theory, although some say the perceived threat was real.
Often electromagnetic radiation is referred to as a spectrum. Here's an excellent, but very long, NASA video giving a tour of the spectrum:
-- Marge
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| NASA, X1.3 Solar Flare of 2014-April 25, Space.com |
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To see an excellent video about what it takes to be an X-class solar flare, check out this video at NASA's site.
The sun is our major source of electromagnetic radiation (EMR), even though, according to YES I Can! Science (sadly now retired):
The Earth and everything on it is a source of electromagnetic radiation. The major fraction of this radiation is in the infrared part of the spectrum, whereas the incident solar radiation is primarily in the visible part of the electromagnetic spectrum.
For current information on solar activity, give SolarHam a look.
***
 |
| RealTime Solar Wind readout, SolarHam |
***
Another source for information on what the sun's currently up to, especially its cyclic activity, is The Old Farmer's Almanac.
In Alaska there's the Geophysical Institute at University of Alaska Fairbanks sensing how the solar wind affects Earth’s ionosphere and magnetosphere and sharing the data it collects. Another project, called HAARp (High Frequency Active Auroral Research Program), also offered some interesting data, but it has been shut down due to local distrust. It also became the target of a conspiracy theory, although some say the perceived threat was real.
Often electromagnetic radiation is referred to as a spectrum. Here's an excellent, but very long, NASA video giving a tour of the spectrum:
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-- Marge
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