1) Who discovered the first four satellites of Jupiter?
a) Christiaan Huygens
b) Johannes Kepler
c) Galileo Galilei
d) Thomas Pickering
2) Which spacecraft first visited Jupiter?
a) Pioneer 8
b) Pioneer 10
c) Ulysses
d) Volyager 1
3) Who is Jupiter in mythology?
a) God of fire
b) King of gods
c) God of forest
d) God of air