In the Skylab student project, high school students submitted proposals for experiments that could be performed on board Skylab by the astronauts. This book describes the experiments designed by the students and reports what happened to those experiments in the space laboratory. The student experiments included studies of the central nervous system, embryo development, weightlessness, particle physics, and astronomy. This book also describes the demonstrations performed on Skylab by the astronauts to show the effects of weightlessness. (Author/BB)