Originally posted on National Post | News:
It’s the job of NASA’s Solar Dynamics Observatory to keep an eye on the sun, a job the SDO has presented in a new video showing off three years’ worth of solar activity.
“In the three years since it first provided images of the sun in the spring of 2010, NASA’s Solar Dynamics Observatory has had virtually unbroken coverage of the sun’s rise toward solar maximum, the peak of solar activity in its regular 11-year cycle,” NASA said in a release.
The observatory captures an image of the sun every 12 seconds and does so on 10 different wave lengths (you can see some of the wavelengths separated out later in the video). The video actually shows the sun at 171 angstroms, which is in the extreme ultraviolet, and out of the normal visual range of human eyes. The wavelength was chosen because it makes it easy to see the turbulent…
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