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Once Newton boldly hypothesized that there was a universal attraction among all bodies everywhere in space, he had to determine the ex...
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Tycho Brahe’s accurate observations of planetary positions provided the data used by Johannes Kepler to derive his three fundamental laws o...
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Some astronomers are engaged in the search for extraterrestrial intelligent life (SETI). Because other planetary systems are so far away, t...
Hypnotic Spiral Pattern
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