From the time Sputnik first sent out its faint bleep, bleep signal back in 1957, space has fascinated kids. This series looks at that early satellite as well as a host of other space firsts, including the pioneering Valentina Tereshkova, the first woman in space, and Skylab, the first American space station. With its emphasis on the human effort involved in traveling to space, this series offers readers an exciting and engaging look at some of the most significant scientific achievements of our time, with many never-before-published photographs.