A Martian spy infiltrates an earth-based project to build a space ship for a trip to Mars.; A toddler accidentally drinks an accelerated growth formula.; A scientist invents a method of suspended animation that results in him and his wife re-starting the human race on a distant world in the far, far future.; Astronomer Ned Harris discovers a tentacled planetoid that soon attacks Earth.; Speculation about the benefits of time travel.; The professor experiments with eating.; American Indian legends about the stars and other celestial bodies.