Paper, 'A new theory for the Moon' by J D [Jean Dominique] Cassini Cassini uses observations of the Moon's diameter to support his hypotheses that 'the distance of the Moon from the Earth is 100 diameters of the Moon' and that 'in the quadratures that happen in the perigee, the distance of the Moon from the Earth is 107 diameters.' Subject: Astronomy [17th Century]