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 and Jupiter. While itâs inaccurate to state that Galileo discovered Jupiter, Galileo was the first astronomer to detail extensive observations about the planet. He was also the first astronomer to discover the four largest moons that orbit the planet. These moons are: Io.