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Observational Astronomy

who was galileo galilei
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Who Was Galileo Galilei?

Galileo Galilei (1564-1642), the great Italian scientist and mathematician, was the first astronomer to use a telescope, the discoverer of t

how were the planets named
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How Were the Planets Named?

All of the planets, except for Earth, were named after Greek and Roman gods and goddesses. The name Earth is an English/German name which si