In 1981, outer space got a lot closer — or at least easier to see— when the Hubble Telescope launched and the Space Telescope Science Institute was founded. For the past four decades, the institute has shared amazing photographs of outer space captured by the telescope, and in the process has explained a little bit more of the universe around us. The Hubble Telescope has helped us understand the age and expansion of the universe, black holes, and supernovas, as well as bringing us "local" knowledge of the solar system and the Milky Way.