INTRODUCTION Christopher Columbus was possibly one of the greatest explorers ever known. BACKGROUND Christopher Columbus was born in Genoa, Italy, in 1451, and died on May 20, 1506. Columbus was married in 1479. His wife, Dona Felipa, died after his son was born. Christopher Columbus had two brothers. His dad was a weaver. When Columbus was older he helped his dad on the loom. He had little education and only when he was an adult, learned to read and …showed first 75 words of 486 total…

…showed last 75 words of 486 total…accomplished this by combining two lenses and a tube in a different way than previously used in the microscope. By using convex and concave lenses he was able to magnify stars and planets. Like the microscope, the telescope was invented in Holland and bent light to view a desired image. Galileo Galilei used the telescope to develop his theories and ideas about Earth and its relation to the stars and the rest of the universe.