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OpenStudy (liz_beauty45):
Scientists used to believe that the earth was the center of the universe. Which invention was primarily responsible for obtaining evidence against this? A) sextant B) astrolabe C) Hubble telescope D) optical telescope
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OpenStudy (purple_pink):
this is 7th grade?
OpenStudy (liz_beauty45):
what do you mean..?
OpenStudy (shadowlegendx):
This sounds like information that would be in your textbook/lesson
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