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| The Earth, appearing as a tiny point of light, viewed by Voyager 1. Image credit: NASA/JPL-Caltech |
On
Valentine's Day 1990, the Voyager 1 spacecraft, launched in 1977 and by
then 3.7 billion miles from the Sun, turned its camera around and took a
snapshot of Earth. Creating the poignant image, showing our home planet
as a tiny point of light in the vastness of space was an idea advocated
by astronomer Carl Sagan and inspired the title of his 1994 book, Pale Blue Dot.
You may remember Carl Sagan as the presenter of the epic 80s space documentary series, Cosmos.
Image credit: NASA/JPL-Caltech