PALE BLUE DOT - A GREAT SPEECH BY CARL SAGAN
190,583 views•Jan 18, 2014
KIWIS JOURNEY
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Pale Blue Dot is a photograph of planet Earth taken in
1990 by the Voyager 1 spaceprobe from a record distance of about 6 billion
kilometers (3.7 billion miles) from Earth, as part of the solar system Family
Portrait series of images. In the photograph, Earth is shown as a fraction of a
pixel (0.12 pixel in size) against the vastness of space. The Voyager 1
spacecraft, which had completed its primary mission and was leaving the Solar
System, was commanded by NASA to turn its camera around and to take a
photograph of Earth across a great expanse of space, at the request of Carl
Sagan.Subsequently, the title of the photograph was used by Sagan as the main
title of his 1994 book, Pale Blue Dot: A Vision of the Human Future in Space.
From Wikipedia
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