Transit of Venus (2012)

NASA fast-motion video of sun: 'Violent dance'

NASA fast-motion video of sun: 'Violent dance'

The sun is ramping up toward solar maximum -- the white-hot peak of activity in an 11-year cycle -- and NASA has been snapping images of the phenomenon every 12 seconds for three years.

The space agency put together a three-minute video showing images taken by the Solar Dynamic Observatory since spring 2010. As the Los Angeles Times' Deborah Netburn reported last month, the NASA video stitches together two SDO images per day over the three-year period.

Alex Young, a heliophysicist at Goddard Space Flight Center, narrates the video to point up...

EDITION: California | U.S. & World