Coloured image of sunspot group & sun granulation

Numéro d’image : 11884097
Coloured image of sunspot group & sun granulation
Sunspots and granulation. Coloured image of a sun- spot group (dark markings) and solar granulation. Each sunspot has a dark core,the umbra,and a lighter,filamented periphery,the penumbra. Sunspots are caused by intense,localised magnetic fields which inhibit the flow of heat from the interior. The bright granules are the tops of currents bringing hot gas to the surface. The dark lines are the boundaries of these currents. Photographed by the Vacuum Tower telescope at Sacramento Peak,USA,on 15 November 1970
Licence : Droits gérés
Crédit: Science Photo Library / National Optical Astronomy Observatories
Taille de l’image : 3738 px × 3762 px
Model Release : Non requis
Property Release : Non requis
Restrictions :
  • THIS PICTURE MAY NOT BE USED TO STATE OR IMPLY NOA ENDORSEMENT OF ANY COMPANY OR PRODUCT
  • THIS PICTURE MAY NOT BE USED TO STATE OR IMPLY NOP ENDORSEMENT OF ANY COMPANY OR PRODUCT

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