And the winner for Unexpected Video of the Week goes to...

On Thursday night, during the second annual Hilarity for Charity event - a fundraiser organized by Seth Rogen and his wife that benefits The Alzheimer's Association - the actor jumped on stage with The Backstreet Boys.

Posted in: Seth Rogen

For the last three years, NASA's Solar Dynamics Observatory (SDO) has been tracking our sun - the one and only - as it approaches "solar maximum."

That's the scientific term for the star's peak in solar activity each 11 years, and in this new video, NASA has condensed that time span into three minutes.

Posted in: News