Spörer Minimum
- 史波勒极小期（史波勒极小期是太阳活动低潮期，1460年至1550年，长达90年。由蒙德极小期论文确定和命名，发表于科学期刊）
Spörer Minimum
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abstract:
The Spörer Minimum was a 90-year span of low solar activity, from about 1460 until 1550, which was identified and named by John A. Eddy in a landmark 1976 paper published in Science titled "The Maunder Minimum".
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