Attaching the new module and the spare communications antenna will be the top priorities for the six astronauts during three planned spacewalks.

While this is the last planned mission for Atlantis , which already has , NASA has two more flights scheduled with other shuttles before the entire fleet is retired. The is scheduled for November.

Sharon Gaudin covers the Internet and Web 2.0, emerging technologies, and desktop and laptop chips for Computerworld . Follow Sharon on Twitter at @sgaudin or subscribe to Sharon's RSS feed . Her e-mail address is sgaudin@computerworld.com .

in Computerworld's Emerging Technologies Knowledge Center.