"And this," says Dr.Williams, "is good news for long-term space travel."

威廉姆斯博士说：“对于长期太空旅行来说，这是好消息。”

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It's a severe challenge for mid-long term space flight to assure astronauts in sound body and mind and have good working capability.

随着载人飞行逐渐进展，保障航天员在航天中的身心健康和良好的工作能力是中长期飞行最严峻的挑战。

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And NASA is also being called on to develop new technologies to solve problems involved in long-term space flight for humans and robots.

VOA: special.2010.04.28

Also on board is a new exercise machine, which is part of ongoing studies into the effects of long-term space flight on muscle and bone loss in astronauts.

VOA: standard.2010.04.05

But as he says, the search for life in outer space is a long-term goal, and he is still hopeful.

VOA: special.2010.05.25

Co-author Dr Benjamin Blaiszik, now at Argonne National Laboratory, explained that the self-healing circuitry could find uses in a military setting where it would be exposed to extreme stresses or in long-term space applications.

BBC: Time to heal: The materials that repair themselves

The Obama Administration has canceled plans it inherited to send astronauts back to the Moon, the Space Shuttle is about to retire, and the only near-term human space flight initiative on the books is a handout to rich California businessmen to update old technology.

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An e-book at the centre of a row over who can use the term "space marine" is back on sale on the Amazon website.

BBC: Book at centre of space marine row back on sale