Kevin Milne: The Pale Blue Dot - a thought provoking image

A picture is worth a thousand words, or so the saying goes.

Images often convey more meaning and information than can be held in a sentence or two, an image often provoking more emotion or deeper thought.

Kevin Milne saw one such image earlier this week – an image of the Earth, taken in 1990, from 6 billion kilometres away: The Pale Blue Dot.

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