Technicians dressed in clean room attire known as bunny suits attach an overhead crane to a descent stage.

At the Payload Hazardous Servicing Facility at NASA’s Kennedy Space Center in Florida, technicians dressed in clean room attire, known as "bunny" suits, attach an overhead crane to a rocket-powered descent stage preparing for integration with NASA's Mars Science Laboratory (MSL) rover, known as Curiosity. The descent stage will lower Curiosity to the surface of Mars.

A United Launch Alliance Atlas V-541 configuration will be used to loft MSL into space. Curiosity’s 10 science instruments are designed to search for evidence on whether Mars has had environments favorable to microbial life, including chemical ingredients for life. The unique rover will use a laser to look inside rocks and release its gasses so that the rover’s spectrometer can analyze and send the data back to Earth. MSL is scheduled to launch Nov. 25 with a window extending to Dec. 18 and arrival at Mars Aug. 2012. For more information, visit http://www.nasa.gov/msl. Photo credit: NASA/Kim Shiflett