Telescopes had been invented in the early 1600s and Galileo suggested that the recently discovered moons of Jupiter would make useful timekeepers.
(Telescopes; had been invented; L:in the early 1600s) (Galileo; suggested; that the recently discovered moons of Jupiter would make useful timekeepers) Context(Galileo suggested,List([52, 69))):(the recently discovered moons of Jupiter; would make; useful timekeepers)
Galileo suggested,List([52, 69))
Telescopes Galileo the recently discovered moons of Jupiter
had been invented suggested would make
L:in the early 1600s
that the recently discovered moons of Jupiter would make useful timekeepers
useful timekeepers