Galileo's drawing of lunar craters, 1611, (c1655). Galileo Galilei (1554-1642), Italian mathematician, astronomer and physicist made the first effective working telescope in 1609. He described his telescopic observations of the Moon in a letter to the Swiss Jesuit astronomer, Christopher Grienberger (1564-1636). | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Heritage Images / Oxford Science Archive |
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