All about telescopes refractors reflectors and more a telescope is an optical instrument used to magnify and enhance the view of faraway objects be they astronomical or terrestrial most telescopes fall into one of two main categories refractor or reflector also available are schmidt cassegrain telescopes a combination of reflector and . All about telescopes telescopes help us to see far distances the first telescope was invented in the early 1600s in the dawn of the scientific revolutionbefore then people had to rely on the naked eye. All about astronomy where are we in the universe we live on earth the third planet of our solar system our solar system is located in the milky way galaxy a collection of 200 billion stars together with their planetary systems the milky way galaxy is located in a group of 30 galaxies we call the local group
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