Watch Online Free on Watchseries. If Ivar, Em and Quent want to know all about the sun, moon, stars and planets that comprise the universe, who else should they consult but the learned Galileo Smith, a self-proclaimed astronomy buff who knows the Big Dipper from the Milky Way, Saturn from supernovas. Young viewers will enjoy this thrilling journey through space that combines live-action sequences with stunning computer animation as they make a stop at each of the planets.