Human Space Travel: Environmental and Health Effects
Ever since people first looked up at the stars, mankind has wondered about going into space. What was up there? What would it be like? Was there life, looking back at them? Some of these questions have been answered by NASA and the space program, and some of the questions remain. However, it is no secret that space travel has effects on the human body and on the environment, and those are two areas that are not often discussed as thoroughly. In addition, there are financial costs (and the potential for big profits) to consider when it comes to space travel and human beings..
Effects on Human Health
One of the main effects on human health is on the cardiovascular system. Because there is little gravity in space, the fluids in the body are able to shift more easily, and that can result in a stuffy nose, puffy face, and headache (Effect, n.d.). Bones and muscles weaken more rapidly in space, as well, and the red blood cells in the body change their shape. Fortunately, the shape of the cells is easily reversible with a return to normal gravity. However, the weakening of the bones and muscles is not something that will simply correct itself when a space traveler returns to earth (Effect, n.d.). Anyone who travels in space should also be prepared for some motion sickness and a higher dose of radiation than the one to which he or she would normally be exposed on earth.
All of those things can cause short- and long-term problems for human health, and are worth carefully considering to make sure that the benefits of traveling in space really do outweigh the costs and potential costs that could be faced at a...
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