载人登陆到那个红色的行星上是一个令人畏惧的挑战，它处于当前技术能力所及的边缘，或者超过了当前的技术能力。
A crewed mission to the red planet is a daunting challenge that lies at the edge of current technological capabilities and possibly beyond.
“发现号”“亚特兰蒂斯号”和“奋进号”航天飞机即将退休，为了让路于新的空间计划，后者的目标是2025年送宇航员到小行星上并最终登陆火星。
The shuttles (Discovery, Atlantis and Endeavour) are being retired to make way for a new space plan aimed at sending astronauts to an asteroid by 2025 and ultimately onto Mars.
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