Solar activity, SDO ultraviolet image

Solar activity, SDO ultraviolet image

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Caption: Solar activity, Solar Dynamics Observatory (SDO) combined ultraviolet image. The SDO is an Earth-orbiting spacecraft launched in 2010 by NASA and used to observe the Sun. Here, the Sun is seen at three wavelengths: 304 (orange), 211 (pink), and 171 (yellow) angstroms (all extreme ultraviolet). Channel 304 shows filaments and prominences in the upper chromosphere and lower transition region. Channel 211 shows the Sun's corona (outer atmosphere). Channel 171 shows coronal loops and the upper transition region. Image obtained on 23 January 2012, during a period of solar activity.

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Keywords: 171 angstroms, 171-angstrom, 2012, 211 angstroms, 211-angstrom, 21st century, 23 january 2012, 304 angstroms, 304-angstrom, aia, aia 171, aia 211, aia 304, astronomical, astronomy, astrophysical, astrophysics, atmospheric imaging assembly, channel 171, channel 211, channel 304, combined, composite, corona, coronal loop, coronal loops, extreme ultraviolet, filaments, from space, high energy, lower transition region, nasa, outer atmosphere, plasma, prominences, research, satellite, satellite image, sdo, solar, solar activity, solar disc, solar dynamics observatory, solar physics, solar system, space, space telescope, star, stellar, sun, ultraviolet, upper chromosphere, upper transition region, uv

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