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To understand in a qualitative way the notion of relative movement, to a sufficient degree to be able to explain the apparent movement of heavenly bodies as a consequence of the earth's rotation and translation.
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To explain in terms of these same movements the succession of days and nights and the seasons of the year.
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To know the components of the solar system and some of its most interesting properties.
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To understand the analogous nature among the sun and other stars, as well as acquiring a notion of its origin, the causes of its energy emission and its probable destiny.
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To explian the night sky as a way of seeing our galaxy, the Milky Way.
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To understand the enormous quantity of galaxies which exist in a universe perceived according to its evolutionary character .
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