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Constellation program
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Constellation program: Related Content

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Ares I-X test rocket; Constellation program
Orion spacecraft
Altair lunar lander
Ares I launch
Ares V launch
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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.
All About Astronomy