Pisa International Airport Pisa International Airport Pisa International Airport () , also named Galileo Galilei Airport is an airport located in Pisa, Italy. It is the main airport in Tuscany and the 10th in Italy in terms of passengers. It is named after Galileo Galilei, the famous scientist and native of Pisa. The airport was first developed for the military in the 1930s and 1940s. The airport was used by 5,233,118 passengers in 2017. It serves as a focus city of Ryanair. The airport had its own railway station with a service to and from Pisa Central railway station but this was closed
Galileo Galilei planet in 1616, further confusing him. Galileo also observed the planet Neptune in 1612. It appears in his notebooks as one of many unremarkable dim stars. He did not realise that it was a planet, but he did note its motion relative to the stars before losing track of it. Galileo made naked-eye and telescopic studies of sunspots. Their existence raised another difficulty with the unchanging perfection of the heavens as posited in orthodox Aristotelian celestial physics. An apparent annual variation in their trajectories, observed by Francesco Sizzi and others in 1612–1613, also provided a powerful argument against both the