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

Solar Mystery Solved

(PhysOrg.com) -- Solar flares are amongst the most dangerous cosmic phenomena man has ever known. Though they pose no harm to humans, their effect on technology is vast. When they occur, they possess the capability ...

Aug 26, 2009 4.4 / 5 (20) 8 weblog