Gorgeous NASA video shows the sun at different wavelengths

The sun takes on a jewel-like quality in this video from NASA's Scientific Visualization Studio, which converts light at various wavelengths that are invisible to the human eye into images that humans can see. Watch as various features on the sun's surface appear and disappear depending on the wavelength range. » 12/21/13 9:00am 12/21/13 9:00am

This is the first real video of a comet crashing into the Sun

Comets will occasionally come a little too close to the Sun and crash into a fiery oblivion, but until now we had never been able to see it as it happened (though there have been some fake comet-smashes-the-sun videos circulating online). Witness the last moments of a sun-grazer comet. Blink and you may miss it -… » 7/14/11 11:20am 7/14/11 11:20am