this is not about first generation space exploration, but this series may explain its conclusion. http://en.wikipedia.org/wiki/The_Gap_Cycle http://en.wikipedi

this is not about first generation space exploration, but this series may explain its conclusion. http://en.wikipedia.org/wiki/The_Gap_Cycle http://en.wikipedia.org/wiki/The_Gap_Cycle this book series is without a doubt my favourite.