3:40 video of coworkers at JSC doing a cold-flow test on the Morpheus lunar lander prototype. Liquid nitrogen is run through the fuel system to check for leaks without using explosive fuel. We also used nitrogen in Building 31 to protect lunar samples from the environment. NASA's mysterious Project M investigated sending a Robonaut to the Moon within 1000 days of a go-ahead. M has morphed into Morpheus, a prototype lunar lander built in partnership with Armadillo Aerospace. Who says we don't have fun in Houston?