Credit: BABAK TAFRESHI/SCIENCE PHOTO LIBRARY

Caption: Sunspots. Zoom-in view of the solar disc and large sunspots. The dark colour of sunspots is due to their temperature being lower than the surrounding surface of the Sun. It is thought that intense localised magnetic fields inhibit the convection process that brings hot material to the surface. Sunspots are normally associated with intense solar activity. The number of sunspots varies with time according to a cycle which lasts about 11 years. Sunspot maxima are often linked to an increase in the strength of the solar wind - causing an increase in aurorae and interference to radio transmissions on Earth. Sunspots are massive structures, ranging in size from hundreds to many thousands of kilometres across.

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Keywords: 10 seconds or greater, active, activity, astronomical, astronomy, astrophysical, astrophysics, black background, close up, close-up, closeup, cluster, detail, disc, group, heliophysical, heliophysics, magnetic, magnetism, no one, no-one, nobody, pan, panning, several, shot, solar, solar astronomy, solar surface, solar system, space, spot, star, sun, sun spot, sunspot, sunspot group, sunspots, surface, zoom, zoom-in

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Sunspots

K004/7853 Rights Managed

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Duration: 00:00:14.21

Frame size: 1920x1080

Frame rate: 30

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

File size: 594.5M

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Capture format: Digital Rostrum

Codec: Apple ProRes 422 HQ

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