Solar Sailing Our Way to The Outer Planets | NASA Space Tech FriendsofNASA.org: NASA researchers are working on a concept to use solar sail technology to get to Neptune and Uranus in a fraction of the time that it would take with current propulsion technology. Using the power of the Sun, the concept called SCOPE—short for ScienceCraft for Outer Planet Exploration—could help us unlock the secrets of the scarcely visited ice giants in our outer solar system. NASA 360 takes a look at the NASA Innov