The Telescopic Tourist's Guide to the Moon by Andrew May

Author:Andrew May
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

Ptolemaeus is named after the 2nd century astronomer Ptolemy , who built on Hipparchus ’s mathematical work—as well as creating an Earth-centered model of the Solar System which prevailed for a thousand years. This made him something of a hero to Riccioli, who disliked the increasingly fashionable Sun-centered alternative. That’s why he gave Ptolemy such a prominent place near the center of the Moon’s visible disk.

More than 40 years before Riccioli published his map of the Moon, the first person to look at it through a telescope was Galileo … who was exactly the kind of Sun-centric Ptolemy -basher that rubbed Riccioli the wrong way. Nevertheless, Galileo was very impressed by the crater that would later bear Ptolemy’s name, as he recorded in Sidereus Nuncius in 1610:There is another thing that I must not omit, because I found it very striking: near the center of the Moon there is a cavity that is larger than all the other ones and perfectly round in shape. [16]

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