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Earlier research has suggested that 10% of aerosols in the atmosphere are already contaminated by space debris.
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"The crew's doing great," Steve Stich, manager, Nasa's Commercial Crew Program, said at a news conference.。关于这个话题，搜狗输入法下载提供了深入分析
As the spacecraft re-emerged from the darkness, Lovell was first to announce the good news. "Please be advised," he said as the radio crackled back into life, "there is a Santa Claus."
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