Midnight sun: Quick Facts

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Midnight Sun at Point Barrow, Alaska, at latitude 71° 23′ N; exposures made in August at half-hour intervals

Kotzebue Sound, Alaska

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Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.

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