E Not everyone thinks sending humans intospace is a smart idea. Many say it's tooexpensive. Also, most space trips are not short.A one-way trip to Mars, for example, wouldtake at least six months. People travelingthis kind of distance could face many healthproblems. In addition, these first people wouldfind life extremely difficult in space. On themoon's surface, for example, the sun's rayslare very dangerous. People would have to stayindoors most of the time.