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John Hadley is today remembered as scientist who was the first who managed to significantly evolve Isaac Newton designs of reflecting telescope by the introduction of precision aspheric and parabolic speculum metal mirrors.
Zacharias Janssen is one of the three original spectacle-makers from Netherlands who claimed that he was the first persons who have discovered first modern telescope. Even though his claims were never confirmed, he managed to carve his way into our history.
Galileo Galilei is today remembered as one of the most celebrated and most influential scientist from the age of Italian 17th century Renaissance. One of his greatest inventions was his powerful telescope, which enabled him to completely change our view on the universe around us.
Hans Lippershey is today remembered as the person who started the modern history of telescopes. Here you can find out more about his life, and events that transpired when he tried to unveil his discovery to the world.