On July 19th, for the first time in human history, Earth was photographed by two of our satellites; Cassini, in orbit around Saturn, and Messenger, orbiting Mercury. From Saturn, we see a single dot, easily confused for any of the other lit dots in the sky, except being a bit brighter. In the Mercury Messenger image, we see our earth-moon system as a dual planetary system. With our outsized moon, many astronomers view us that way.
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We only stand at the threshold, a babe, looking out onto the porch of the universe.ReplyDelete