The first time a caveman looked up at the night sky, he dreamed of what the stars might look like up close. Telescopes are mankind's way to study the stars without venturing all the countless light-years necessary to actually see them up close. Astronomers use telescopes powerful enough to capture images that are not only invisible to the naked eye but unimaginable to terrestrial sensibilities. Let's take a look at ten of the largest telescopes in the world. With that in mind, here are 10 giant telescopes and where they are located.