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Thomas Harriot, Three drawings of the Moon


Thomas Harriot (1560-1621)
Three drawings of the Moon, 1609-1611
Petworth, The Egremont Collection

Four months before Galileo pointed his telescope at the Moon, Harriot used a telescope with a magnifying power of 6x in August 1609 to conduct the first recorded observations of the Earth's satellite (1st drawing). He resumed his observations after Galileo's discoveries (2nd and 3rd drawings), going on to produce the first map of the Moon in 1611.