News tagged with power grids

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How the sun gets its spots

Sunspots are huge, dark, irregularly shaped--and yet, temporary--areas of intense magnetism on the sun that expand and contract as they move.

Jan 07, 2011
4.7 / 5 (18) 7 | with audio podcast

Sneak Attacks from the Sun

(PhysOrg.com) -- Our Sun can be a menace when it sends out powerful solar blasts of radiation towards the Earth. Astronomers keenly watch the Sun to learn more about what powers these solar eruptions, in hopes ...

Dec 08, 2010
4.2 / 5 (9) 4 | with audio podcast