The Figure at right shows Jupiter and the day to day changing positions of Jupiter's moons, Io, Europa, Ganymede, and Callisto. 4. Looking first at Calisto, how long does it take to orbit all the way around Jupiter once? Callisto's orbital period: 5. Drawing a smooth line dot-to-dot for the positions for Ganymede, determine its orbital period. Ganymede's orbital period: 6. Drawing a smooth line dot-to-dot for the positions for Europa, determine its orbital period. Europa's orbital period: E-I - G June 1 I E G- CJune 2 I GI E- C-June 3 G- I June 4 G-E- - C - June 5 G-I E- June 6 C GE- - June 7 E-I June 8 C E G- June 9 7. Drawing a smooth line dot-to-dot for the positions for Io, determine its orbital period. GE June 10 I Io's orbital period: C- GI E June 11 8. Why are less than four moons visible on some days? C-G-E- I June 12 CG I E June 13