The Pale Blue Dot
November 13th 2021 Yesterday my friend, Andrew Derham, a science boffin and all-round oracle, taught me something new. For years I have known and admired Carl Sagan’s ‘Pale Blue Dot’ speech – so called because it is based on a photograph of Planet Earth taken from 6,055,000,000 kilometres away. Yesterday, Andrew informed me that the Pale Blue Dot photo was Sagan’s idea and that he spent ten years persuadin
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