When Galileo was 46 years old, in 1610, he developed the telescope, secured tenure and a big raise at Padua, then went on to make all the discoveries announced in Sidereus Nuncius : mountains on the moon, the moons of Jupiter, phases of Venus, etc.
(Galileo; was; 46 years old) (all the discoveries; announced; L:in Sidereus Nuncius)
Galileo all the discoveries
was announced
46 years old
L:in Sidereus Nuncius