Upon turning his telescope to Jupiter, Galileo was the first to see the four largest moons of Jupiter.
(Galileo; was; the first to see the four largest moons of Jupiter; T:Upon turning his telescope to Jupiter) (the first; to see; the four largest moons of Jupiter)
Galileo the first
was to see
the first to see the four largest moons of Jupiter T:Upon turning his telescope to Jupiter
the four largest moons of Jupiter