NASA has announced that rollback preparations are proceeding to return Space Shuttle Atlantis to safety as Tropical Storm Ernesto heads toward Kennedy Space Center. Tuesday's scheduled launch has been postponed and a new launch date has not been set. "Rollback" is the term used when the Space Shuttle must be rolled back from the launch pad atop the Mobile Launcher Platform and Crawler-Transporter to the Vehicle Assembly Building (VAB). Between 1983 and 2005, there were sixteen rollbacks.
During its mission, STS-115, the Atlantis crew will install a second set of solar arrays on the space station, doubling the station’s ability to generate power from sunlight and adding 17.5 tons to its mass.
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