Since the time humans appeared on Earth, curiosity has always been a prominent part of our nature, which has led to our discoveries and knowledge of space, science and technology. One of the biggest effects of this curiosity is space exploration. Humans have always wondered what is beyond our planet...

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In 1609 Galileo Galilei turned his telescope to the sky and expanded the whereabouts of science; planetary astronomy became a new and different science, moreover, the concerns about the motions of planets, surfaces of other worlds could now be studied as well. ... Galileo Galilei constructed a twenty-powered instrument and turned it to outer space in 1609. ...

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