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This is certainly the last time you’ll ever see this. It’s only the second time in history that they’ve had shuttles on both launch pads at the same time.

This time it happened because NASA is launching it’s final mission to service the Hubble Space Telescope. The Hubble is at such a high altitude that it isn’t possible for a shuttle to carry enough fuel to get to both Hubble and the ISS, so if there is a problem they have to have a second shuttle on the launch pad ready to go rescue the crew… something they’ve never done before.

h/t to Kevin