Hubble Space Telescope is awaiting one final shuttle servicing mission, but why is a telescope worth the risk? Hubble has made numerous discoveries, such as the birth of stars, the death of stars, the existence of black holes, the violence of a comet crash, charting Dark Matter clouds, and discovering 2/3rds of the Universe itself, in the form of mysterious Dark Energy. One day, the Hubble mission will end, and Hubble will burn up in the atmosphere. But a new telescope, the James Webb, will take its place among the stars.