"NASA's Deep Impact Films Earth as an Alien World"
NASA (July 17, 2008)
"COLLEGE PARK, Md. -- NASA's Deep Impact spacecraft has created a video of the moon transiting (passing in front of) Earth as seen from the spacecraft's point of view 31 million miles away. Scientists are using the video to develop techniques to study alien worlds.
" 'Making a video of Earth from so far away helps the search for other life-bearing planets in the Universe by giving insights into how a distant, Earth-like alien world would appear to us,' said University of Maryland astronomer Michael A'Hearn, principal investigator for the Deep Impact extended mission, called EPOXI.
"Deep Impact made history when the mission team directed an impactor from the spacecraft into comet Tempel 1 on July 4, 2005. NASA recently extended the mission, redirecting the spacecraft for a flyby of comet Hartley 2 on Nov. 4, 2010...."
The NASA press release includes images and a video, and goes into a bit more detail than some of the news articles about the video.
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