The Hubble Space Telescope, launched in 1990 by space shuttle Discovery, orbits the earth about 380 miles above us. It uses two cameras and two spectrographs to record images of space. Hubble’s pictures have delighted scientists and star gazers for more than a decade, but now its future is in peril. In January of this year, NASA canceled an upcoming service mission, choosing to let Hubble degrade and die. Here’s a look at Hubble’s achievements, and how Hubble aficionados are trying to save it.