Tuesday, April 03, 2007

Pale Blue Dot



This is cheesy, but for those of you who, like me, find the notions of the smallness of our planet compelling, a moving piece. Carl Sagan, despite his bitterness towards the end of his life, was a man who could put such notions more beautifully than anyone else I have come across.

The background for those who don't know: the photograph that is used as the basis of the "pale blue dot" concept is a real one. On February 14th, 1990, the Voyager 1 spacecraft, at that point roughly 4 billion miles from Earth, took a photo mosaic of the Solar System, looking back over its shoulder, as it were, on its way to the emptiness of interstellar space. The Earth, according to Wikipedia, occupied 0.12 pixels in the photo shown.

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