Lightweight Spacecraft News Today

Tonight, two young sisters, and their invention that even nasa will rely on. weve chosen them as our persons of the week. kimberly and rebecca yeung from seattle, washington, in their garage two years ago, building their own mini lightweight spacecraft. >> our goal was to launch it into space. >> or at least as close to space as we could get. >> reporter: trial and error. even styrofoam balls in case of a water landing. and then the day arrived. theres dad winston. >> 3, 2, 1. >> it was really c...