It's no easy task getting NASA's Mars Reconnaissance Orbiter ready for launch. Workers stabilize the crane holding one of the enormous billboard-sized solar panels temporarily removed from the spacecraft prior to rigorous testing.

It's no easy task getting Mars Reconnaissance Orbiter ready for launch. Workers stabilize the crane holding one of the enormous billboard-sized solar panels temporarily removed from the spacecraft prior to rigorous testing. This test is one of many "checkups" the spacecraft must undergo to verify its readiness for launch.

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