Credit: NASA/SDO/GODDARD SPACE FLIGHT CENTER/SCIENCE PHOTO LIBRARY

Caption: The Sun observed at different wavelengths of light, each shown as a thin slice. Observations at different wavelengths reveal different things about the Sun's activity, as shorter wavelengths correspond to higher-energy processes. Ten different wavelengths of light are shown here. The clip starts with the Sun shown in visible light (orange/yellow) at 617.3 nanometres, corresponding to orange light. The slices and wavelengths revealed progressively from that are (clockwise): 170nm (pink), 160nm (green), 33.5nm (blue), 30.4nm (orange), 21.1nm (violet), 19.3nm (bronze), 17.1nm (gold), 13.1nm (aqua) and 9.4nm (green). The clip then rotates the filters around the Sun. The visible light images are taken by the Helioseismic and Magnetic Imager (HMI) on NASA's Solar Dynamics Orbiter (SDO) spacecraft. The remaining images are taken by the SDO's Atmospheric Imaging Assembly (AIA). The visible light is emitted from atoms at a temperature of around 5700 degrees Celsius. The extreme ultraviolet radiation at 9.4nm, comes from atoms that are about 6.3 million degrees Celsius, and is a good wavelength for looking at extremely hot solar flares. Sunspots that are dark at optical wavelengths are surrounded by bright glowing arcs in ultraviolet light. By examining pictures of the Sun in a variety of wavelengths, scientists can track how particles and heat move through the Sun's atmosphere.

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Keywords: 2011, 21st century, active, activity, aia, astronomical, astronomy, astrophysical, astrophysics, atmospheric imaging assembly, black body, disc, disk, extreme, feature, flare, flares, heliophysical, heliophysics, helioseismic and magnetic imager, helioseismology, hmi, image, images, light, many, multiple, nasa, optical, rotating, sdo, slice, solar, solar astronomy, solar dynamics observatory, space, spacecraft, star, stellar, sun, sunspot, sunspots, surface, system, ten, ultraviolet, uv, visible, wavelength, wavelengths

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Sun observed at different wavelengths

K004/1382 Rights Managed

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Duration: 00:00:50

Frame size: 1920x1080

Frame rate: 30

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 863.1M

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Capture format: Digital Image Sequence

Codec: H.264

Interlaced: Yes

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