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New Scientist - Sunspots
[NS R520/072]

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Sunspots. Swedish One-metre Solar Telescope image of sunspots on the surface of the Sun. Sunspots are cooler regions of the Sun's surface that appear dark against their brighter, hotter surroundings. They comprise a dark umbra surrounded by a lighter, filamentous penumbra. The individual filaments comprising the penumbra are around 150-180 kilometres in diameter. It is thought sunspots are formed by powerful magnetic fields intersecting the Sun's visible surface (photosphere). The amount of sunspots on the Sun varies over an eleven year cycle, for unknown reasons. Image taken on 15th July 2002.

Keywords: astronomical, astronomy, astrophysical, astrophysics, atmosphere, cosmology, filamentary, filaments, granulation, hot, magnetohydrodynamics, penumbra, plasma, science, solar, star, stellar, sun, sun's surface, sunspot, sunspots, swedish one metre telescope, umbra

Credit: SCHARMER et al, ROYAL SWEDISH ACADEMY OF SCIENCES / SCIENCE PHOTO LIBRARY

SPL Reference Number: R520/072

Prints are supplied with no markings on the image.
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Deliveries to the UK by Royal Mail Special Cost £4.99 per order
Deliveries to the EU by Air Mail Cost £7.50 per order
Deliveries to the Rest of the World by Air Mail Cost £10.00 per order

Available Options (sizes are approximate):
Size:

size	mm	inches
A0	841 x 1189	33.1 x 46.8
A1	594 x 841	23.4 x 33.1
A2	420 x 594	16.5 x 23.4
A3	297 x 420	11.7 x 16.5
A4	210 x 297	8.3 x 11.7
Image = approximate scale next to 1.8m (6ft) figure

This product was added to our catalog on Wednesday 17 November, 2004.