Two teams touch down at the STARS space station to take on three scientific challenges to win out-of-this-world prizes. First, they must guide magnetic rockets out of the Magnet Maze, dodging comets and stars along the way. Then, they have to pedal bikes to power up lights and launch a rocket. Finally, the teams must make their way across a giant inflatable version of the solar system. Can they get from Neptune to Mercury without being knocked by the swinging stars? In the lab, Ayo and Sam are planting space orchid seeds. They must use measurements to ensure they space them apart correctly and give them enough compost and water.