NASA's Deep Impact space probe has captured video footage(1) of the Moon passing in front of the Earth as seen from a distance of 31 million miles away. Scientists are using the video to learn what to look for in their search for alien worlds around other stars. More at FOXNews.com(2).

1. http://www.nasa.gov/mov/260503main_red_green_blue2.mov
2. http://www.foxnews.com/story/0,2933,385684,00.html