MUSES-CN Asteroid Rover. Nanorover prototype selected for the MUSES-CN asteroid mission. The Nanorover Technology Task is a technology development effort to create very small (10-100s of grams) but scientifically capable robotic vehicles for planetary exploration, which can easily fit within the mass and/or volume constraints of future missions to asteroids, comets, and Mars. The task objective is twofold : to create a useful rover system using current-generation technology including mobility, computation, power, and communications within a mass of a few hundred grams, and to advance selected technologies which offer breakthroughs in size reduction, mobility, or science return to enable complete rovers to be built with a mass well under 100 grams.