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Beyond the earth (view source)

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==Concept #==

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==Concept-1: ''Constellations''==

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Celestial sphere, Celestial objects and contributions of some personalities associated with the study of Celestial objects.

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* Celestial sphere, Celestial objects and contributions of some personalities associated with the study of Celestial objects.

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~~Differences between Stars and Planets.~~

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* Zodiacal constellations

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~~Differences between Geocentric and Heliocentric models of Solar system.~~

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~~Members of Solar system and main features of Planets.~~

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Zodiacal constellations

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