Why Did Sunspots Disappear for 70 Years? Nearby Star Holds Clues - Eos

Five decades of data revealed a star undergoing a pause in magnetic activity similar to what the Sun experienced almost 400 years ago.

Every 11 years, the number of spots dotting the surface of the Sun increases and decreases like clockwork. Astronomers have been tracking the 11-year sunspot cycle for more than 400 years, using it t… [+7576 chars]

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