While everyone was focusing on the qualities of Martian dirt (see below), the crew of STS-124, the shuttle Discovery, was executing a near-perfect mission to expand the International Space Station with the Japanese Kibo laboratory. The shuttle should land Saturday. Commander Mark Kelly signed off as they left the ISS with, ""We wish them the best with their expedition and we hope we left them a better, more capable space station than when we arrived. Sayonara."
COMMENT: Another reminder that humanity and its machines are slowly, bit by bit, accumulating the experience needed to build bigger structures in much more exotic places far from Earth.