Solar Dynamics Observatory Shows Sun's Rainbow of
Wavelengths
This still image was taken from a new NASA movie of the sun based on data
from NASA's Solar Dynamics Observatory, or SDO, showing the wide range of
wavelengths – invisible to the naked eye – that the telescope can view. SDO
converts the wavelengths into an image humans can see, and the light is
colorized into a rainbow of colors.
Yellow light of 5800 Angstroms, for example, generally emanates from material
of about 10,000 degrees F (5700 degrees C), which represents the surface of the
sun. Extreme ultraviolet light of 94 Angstroms, which is typically colorized in
green in SDO images, comes from atoms that are about 11 million degrees F
(6,300,000 degrees C) and is a good wavelength for looking at solar flares,
which can reach such high temperatures. By examining pictures of the sun in a
variety of wavelengths – as is done not only by SDO, but also by NASA's
Interface Region Imaging Spectrograph, NASA's Solar Terrestrial Relations
Observatory and the European Space Agency/NASA Solar and Heliospheric
Observatory -- scientists can track how particles and heat move through the
sun's atmosphere.
Image Credit: NASA Goddard Space Flight
Center
NASA
Guillermo Gonzalo Sánchez Achutegui
ayabaca@gmail.com
ayabaca@hotmail.com
ayabaca@yahoo.com
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