Galileo determined their orbital periods and he realized that Jupiter and its moons were a mini solar system .
(Galileo; determined; their orbital periods) (he; realized; that Jupiter and its moons were a mini solar system) Context(he realized,List([45, 56))):(Jupiter and its moons; were; a mini solar system)
he realized,List([45, 56))
Galileo he Jupiter and its moons
determined realized were
their orbital periods
that Jupiter and its moons were a mini solar system
a mini solar system