galileo+2

With a speacil device he could see magnified, he could see on the earth it was what is known as a terrestrail telescope, or spyglass. he could also us it to observe the sky far a time he was one of very few who could make a good enough for the porpuse he used it for on august 25, 1609, he demonstrated his first telescope to venetian law maker. He published his initial telescopic astronomical observations in march 1610. It was on this page that Galileo first noted an observation of the moons of Jupiter. this observation upset the notion that all celestial bodies must revolve around the earth. on January 7, 1610 Galileo found that three of Jupiter's moons would apear and dissaper.