英语翻译

题目

英语翻译
after man landed on the moon in 1969 ,astronauts around the world had a problem-there were no other places they could go even today ,the other planets are still too far away for astronauts to fly to .so ,while rockets and robots can go to other planets ,manned flights have to stay closer to home ,for the time being .therefore ,since visiting the moon ,manned space programs have turned their attention to solving problems related to living and working in space .
currently ,nasa’s [（美国）国家航空航天局] manned space exploration program focuses on the space shuttle program .nasa now operates three space shuttles ,discovery ,atlanatis ,and endeavor .unfortunately ,two of nasa’s shuttles ,challenger and columbia ,have been lost through accidents .seven astronauts died in each accident .since the beginning of the shuttle program ,the shuttles have flown more than a hundred missions .these missions have included putting satellites into orbit ,photographing the earth ,studying space ,conduc

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