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Space time capsule December 21, 1968

What does it mean that the stars we see in the sky represent light coming at us from millions of years before? The images we have of Earth, of ourselves from space, reflect a distant past too actually. Although we're accustomed now to visualizing our planet from above, as a quilt of satellite photos wrapped around a globe, viewable from any distance on Google Earth, the actual vision they mimic is a single thoroughly ubiquitous NASA photo called "The Blue Marble." 12685

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