Support the Guardian: theguardian.com/sciencepod
1标价29.06亿！“招商伊敦号”邮轮确定要被卖了。。业内人士推荐夫子作为进阶阅读
But the capsule suffered several technical problems during its journey to the space station, and it was deemed too risky to take the astronauts home.，更多细节参见快连下载安装
最令航天业担忧的是钇供应紧张。钇是高温防护涂层中的关键成分，可防止发动机和涡轮在高温下“熔化”，一旦无法定期施涂相关涂层，发动机便无法正常服役。