In 1609-1610, Galileo Galilei improved the telescope and used it to discover Jupiter's four largest moons.
(Galileo Galilei; improved; the telescope; T:In 1609-1610) (Galileo Galilei; used; it; to discover Jupiter's four largest moons; T:In 1609-1610)
Galileo Galilei Galileo Galilei
improved used
the telescope T:In 1609-1610
it to discover Jupiter's four largest moons T:In 1609-1610