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.
Galileo, though, was the first person to use a telescope for astronomical purposes after hearing about Lippersheyâs work in 1609. He improved on Lippersheyâs design and using his new telescope in 1610, he discovered the four largest moons of Jupiter (Io, Ganymede, Callisto and Europa) and physical features on the Moon.