This book focuses on all of the major problems associated with the
absence of body weight in space, by analyzing effects, adaption, and
re-adaptation upon returning to Earth, using sound scientific principles
embedded in a historical context. Serious problems for space travelers
range from Space Motion Sickness (SMS) to recently discovered ocular
effects that may permanently impair vision. Fluid loss and shifts,
spinal changes, and bone and muscle loss are also all results of
weightlessness.
Starting with a brief definition and history of weightlessness, the
authors then address in detail each problem as well as the
countermeasures aimed at alleviating them. In some cases, alternative
hypotheses regarding what can and should be attempted are also
presented. As plans for long-term missions to the Moon and Mars develop,
it will be essential to find countermeasures to weightlessness that are
effective for missions that could span years.