A replica shuttle main engine RSME is poised for installation on Discovery at NASA's Kennedy Space Center.

A replica shuttle main engine (RSME) is poised for installation on space shuttle Discovery in Orbiter Processing Facility-1 at NASA’s Kennedy Space Center in Florida.

The RSME is one of three that will be installed on Discovery during Space Shuttle Program transition and retirement activities. The replicas are being built in the Pratt & Whitney Rocketdyne engine shop at Kennedy to replace the shuttle engines which will be placed in storage to support NASA's Space Launch System, under development. Discovery is being prepared for display at the Smithsonian’s National Air and Space Museum Steven F. Udvar-Hazy Center in Chantilly, Va. For more information, visit http://www.nasa.gov/shuttle. Photo credit: NASA/Jim Grossmann