Just a week earlier, Apollo 13 had safely returned from a perilous journey to the moon.

就在一周前，阿波罗13号刚从月球的危险之旅平安返航。

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You can learn more about the AGC and its history in Journey to the Moon: the history of the Apollo Guidance Computer.

您可以在月球之旅：阿波罗导航计算机的历史中了解有关AGC及其历史的更多信息。

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But it wasn't all that long ago that the best minds in the world thought a journey to the moon was utterly impossible.

不过就在不久之前，不少世界上最聪明的人还认为登月不可能实现呢。

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But Mr Aldrin disagreed with the view that astronauts should test capabilities for a long-duration flight on the Moon before attempting a journey to Mars.

BBC: Moon astronauts urge Mars mission

"We're better prepared for a journey to Mars now than we were when we sent men to the moon in the 1960s, " Zubrin told CNN.

CNN: Life on Mars?

Some ridiculed this journey to outer space in the same way as the idea that people could walk on the moon was once scorned.

FORBES: SpaceX: The Enterprise Voyages Begin