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OpenStudy (ishipdestiel):

How did Copernicus and Galileo build on the work of scientists in the Middle Ages?

OpenStudy (ishipdestiel):

@Hero @pooja195

OpenStudy (tkhunny):

You have nothing? What breakthroughs do you know? What do you know of Galileo's singing ability?

imqwerty (imqwerty):

this question has been asked earlier hm http://openstudy.com/study#/updates/538cb97ee4b062ccf95aa2c1

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