So­lar slow-down

NASA SO­LAR DY­NAM­ICS OB­SER­VA­TORY, 10 OC­TO­BER 2018

Sky at Night Magazine - - EYE ON THE SKY -

A new ac­tive re­gion spins into view in this im­age of the Sun cap­tured by NASA’s or­bit­ing ob­ser­va­tory. Such re­gions are be­com­ing rarer as the Sun ap­proaches the so­lar min­i­mum; the point in our host star’s 11-year so­lar cy­cle when its ac­tiv­ity slows down.

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