Cambridge Encyclopedia of the Sun

X-ray view of the Solar cycle. Dramatic changes in the solar corona are revealed in this four-year montage of images from the Soft X-ray Telescope (SXT) aboard Yohkoh. The 12 images are spaced at 120-day intervals from the time of the satellite's launch in August 1991 at the maximum phase of the sunspot cycle (left) to 1995 near the minimum phase (right).
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