NASA's Earth Observatory runs an invaluable public service with its "Image of the Day" series. Now they've got a decade's worth of images, and they want to know which of 50 finalists you think is the best. Go and vote (so hard to choose!), and on April 29, they will reveal the winner.

My personal choice? I'll bet you think it looks familiar... It's this one:

Labels: contest, satellite imagery, websites