Jovian Moon Period Studies
Galileo begins systematic study of the orbital periods of Jupiter's four large moons.
Permanent historical records · Updated 2026-11-03
1611 in Italy
Explore 4 historical events and records for Italy in 1611.
Historical records for Italy in 1611
Sorted by month and day. Records with no month are shown last. Showing 4 of 4 unique records.
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Longitude Method Using Jovian Moons
Galileo proposes using predicted eclipses of Jupiter's moons as a celestial clock for determining longitude.
Micrometer for Jovian Moons
Galileo develops a micrometer to improve measurements of the apparent separations of Jupiter's moons.
Rome Telescope Demonstrations
Galileo demonstrates telescopic observations in Rome, strengthening recognition of the instrument's astronomical value.
How these records were prepared
Generated from the World History Database historical_events table. Identical display records are collapsed; descriptions otherwise retain the stored text. Coverage and source quality vary. Check primary and specialist sources before citing individual historical claims.