With STS-61 ready to execute the first servicing mission to the Hubble Space Telescope, let's learn about the overall structure of the observatory, what the flaw with its mirror was, and how that flaw came to be.
Columbia is on the launchpad and we've got a whole bunch of life science to get through. And just when you thought it was safe to drop the word "otolith" from your vocabulary.
We've got a packed flight with an advanced communciation satellite, a new kick stage, the return of SPAS, an EVA and a sassy air traffic controller.