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Physics, 02.07.2019 07:50 eaglesjohnson414
Galileo's telescope showed him that venus has a large angular diameter (61 seconds of arc) when it is a crescent and a small angular diameter (10 seconds of arc) when it is nearly full. when venus is "half full," its angular size is about 59 seconds of arc. this sequence of phases and angular sizes indicates that venus:
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