what is an airplane made out of and how do they put it all together from the fuselage to the electronics in the plane, Please with all the boring details.
Hence, prior to the invention of the telescope, nothing was known about the planet besides its position on the sky. The Italian scientist Galileo Galilei was the first person known to use a telescope to make astronomical observations. His records indicate that he began observing Mars through a telescope in September 1610.
Italian scientist; built the first telescope used for astronomy in 1609; first scientist to observe Saturn, the craters of the moon, sunspots, and the moons of Jupiter, discovered that the Milky Way was made up of stars; described this in 1610 in a book called Starry Messenger. Proved Copernicus right.