NASA close to deciding Mars rover landing site

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    Scientists in the close-knit Mars research community get one last chance to make their case this week when they gather before the "judges" — the team running the 2.5 billion U.S. dollar mission that will soon suggest a landing site to NASA, the ultimate decider.

    "All four of these places are compelling places on Mars to study. There's not a loser among them," said landing site scientist Matt Golombek of the NASA Jet Propulsion Laboratory, one of the meeting's leaders.

    The mission will use rover Curiosity to study whether a selected area will have environmental(环境的) conditions suitable for life and for preserving evidence about whether extraterrestial life has existed.

    Being nuclear-powered, the rover cannot go to a location that has either water or ice within one meter of the surface.

    The size of a mini Cooper, Curiosity is scheduled to launch in late November after a two-year delay.(本文由在线英语听力室整理编辑)

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