Crewed Space Stations

This book covers the topic of Human Space Stations, from the earliest to the current International Space Station, with some information on the planning of its replacement. Generally, we distinguish between a space capsule and a space station by the fact that the space station is permanently in orbit, and can be resupplied and new crews delivered, as veterans are returned to the ground. Thus I will include Skylab, designed to be visited by an Apollo capsule, but not Apollo-Soyuz, a short time hook- up of two manned spacecraft. The topic of Spacecraft to get humans to space (and back) is the subject of a companion volume. This book will discuss the options to deliver new crew and logistics supplies to existing stations.