But for deep space, astronauts will need new training entirely, perhaps including spending weeks, even months, in confinement and isolation.

但是对于深太空，宇航员将需要全新的训练，包括在与世隔绝的禁闭中独自度过数周甚至数月。

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Spacewalking astronauts inspected the joint several times before and even collected samples of the steel grit for analysis back on Earth.

太空行走的宇航员以前对接头曾进行过几次检查，甚至收集了钢屑样品回地球分析。

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Of course, even if there was some credible evidence showing that the 1969 Apollo moon landing was a hoax, conspiracy theorists must also account for later moon missions, involving a dozen astronauts.

当然，假如真的存在能够证明1969年阿波罗登月的确是一场骗局的有力的证据，那怀疑论者也必须对随后的探月工程给出合理的解释，包括12名宇航员。

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After all, America's most hallowed ground is the final resting place for war heroes, astronauts, even a U.S. president.

CNN: STORY HIGHLIGHTS

Nasa has detailed its vision for a huge new rocket system that could send astronauts to asteroids and even Mars.

BBC: European tech could propel Nasa's Orion capsule

Earth's magnetic field gives the planet and its inhabitants a good measure of protection, but with space agencies seemingly intent on sending astronauts to the Moon and even to Mars in the next few decades, there is a pressing need for a fuller understanding of the Sun's activity.

BBC: NEWS | Science/Nature | Spacecraft go to film Sun in 3D