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The First Telescope
Galileo built the first telescope in 1608. The invention is called the Galilean moons. Key people where Galileo. Galileo built the first telescope and discovered Callisto, Io, and europa -
The First Reflecting Telescope
Sir Isaac Newton built the first reflecting telescope in 1668. His invention was called the earliest known reflecting telescope. The key person in this event was Sir Issac Newton. Newton built his telescope in England.