Space Travel and Exploration

Is space travel hard or easy and why?



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Space travel is extermely doifficult. It involves physics, anatomy if it is a manned mission, geology if you collect rock samples, and nearly every science you can think of. There are years of planning. Astronauts are trained for two years before they can go into space. Still, there are dangers. Think about Apollo 1, Apollo 13, Challenger, Columbia. Mankind still has much to learn about space travel.