Fisher-Price Smart Cycle Fun-2-Learn [Old Version] Fun-2-Learn Planet Heros Software Cartridge Learn about the alphabet, the planets, and other space objects. Soar through space and visit the planets as you pass by comets and asteroids Join Ace as you travel through the solar system and train to be a Planet Hero. Travel through the solar system with the help of the Planet Heroes. Boys will love to learn with the help of Planet Heroes.