Match each scientist with the correct contribution.
1. invented the telescope
Edwin Hubble
2. discovered four of Jupiter's moons
Ptolemy
3. used math to discover Neptune
Robert Goddard
4. proposed heliocentric theory
Galileo
5. proposed geocentric theory
Johan Galle
6. designed liquid propulsion systems
Hans Lippershey
7. developed the red shift method
Nicolaus Copernicus