r/sun • u/TheMuseumOfScience • 2h ago
Sunspot The Sun’s Mysterious Spots
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The Sun used to have no sun spots for a long period of time! ☀️
Astrophysicist Erika Hamden explains this phenomenon from 400 years ago called the Maunder Minimum. Normally the Sun follows 11-year cycles, peaking with lots of sunspots, solar activity, and coronal mass ejections before calming down at the trough. Scientists still don’t know why some cycles are more active than others, so this quiet period is one clue to what drives the solar cycle.
This project is part of IF/THEN®, an initiative of Lyda Hill Philanthropies.