
Below, NASA's Solar Dynamics Observatory spied a "tornado" as wide as five Earths raging on the sun's surface on Sept. 25, 2011. This sequence of photos follows the tornado over 2 1/2 hours.

A Year at Saturn
Credit: Cassini Imaging Team, SSI, JPL, ESA, NASA

24 Million Kilometers to Saturn
Credit: Cassini Imaging Team, SSI, JPL, ESA, NASA