1611Jovian Moon Period StudiesGalileo Galilei
Galileo begins systematic study of the orbital periods of Jupiter's four large moons.
Historical records for Italy in 1611, rendered directly from the World History Database and ordered by month, day and event.
Galileo begins systematic study of the orbital periods of Jupiter's four large moons.
Galileo proposes using predicted eclipses of Jupiter's moons as a celestial clock for determining longitude.
Galileo develops a micrometer to improve measurements of the apparent separations of Jupiter's moons.
Galileo demonstrates telescopic observations in Rome, strengthening recognition of the instrument's astronomical value.
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