Solar magnetogram, showing the variation in strength of the Sun's magnetic field. Areas of increased magnetic activity (yellow) show where sunspots an
Solar magnetogram, showing the variation in strength of the Sun's magnetic field. Areas of increased magnetic activity (yellow) show where sunspots and solar prominences form. It is thought that these structures form as the Sun's magnetic field lines are twisted over each other by the rotation of the Sun. Sunspots are areas on the Sun's surface where the temperature is lower than the surroundings. Solar prominences are eruptions of material from the Sun's surface. Image obtained at the solar observatory at Meudon, near Paris, France, which is part of the Paris Observatory.
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Photo credit: © PHILIPPE PLAILLY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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Keywords: astronomical, astronomy, astrophysical, astrophysics, circle, circular, field, flare, magnetic, magnetogram, magnetograph, meudon, physics, prominence, solar, space, sun, sunspot, system