News tagged with sunspot cycle

Solar cycle primer

(PhysOrg.com) -- Telescopes spotted the first blemish on the sun in 1611. While the sun had long been thought—at least in the Western world—to be an unchanging, "perfect" orb, sky-watchers observed ...

Oct 28, 2011 4.1 / 5 (10) 22 | with audio podcast

Are Sunspots Disappearing?

The sun is in the pits of the deepest solar minimum in nearly a century. Weeks and sometimes whole months go by without even a single tiny sunspot. The quiet has dragged out for more than two years, prompting ...

Sep 03, 2009 4.8 / 5 (27) 15