Backyard Astronomer Delta College Public Media openbaar
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In binoculars, look near the very center of the lunar disk for a large crater that seems to have a dark, smooth floor. This is Ptolemaeus, named for Claudius Ptolemy, an astronomer of ancient Greece. Two more large craters in a line below Ptolemaeus, Aphonsus and Arzachel, complete the chain.Door Delta College Public Radio
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