Weegy: 1. Hans Lippershey - invented the telescope 2. Galileo - discovered four of Jupiter's moons 3. Johan Galle - used math to discover Neptune 4. Nicolaus Copernicus - proposed heliocentric theory 5. Ptolemy - proposed geocentric theory 6. Robert Goddard - designed liquid propulsion systems 7. Edwin Hubble - developed the red shift method
(More)