A couple of hundred years later, scientists turned their spectacled eyes toward the heavens and crafted the telescope. Building upon the foundation set by sight-correcting optics, Galileo fashioned telescopes with increasingly higher magnifying power. His final prototypes were over four feet long and magnified objects up to 30 times.
With this instrument, Galileo was able to observe the skies with more sophistication. From his observations, he theorized that the earth moves around the sun, a discovery that shifted the future of science and space exploration permanently. Man's viewpoint changed completely from thinking we were the center of the universe to knowing we were not!