Scientists want to bring a chunk of the red planet down to Earth on what's called a sample-return mission.

科学家们希望将这颗红色星球的一大块带回地球，进行所谓的取样返回任务。

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The Mars 500 mission, a simulated mission to the Red Planet in a mock spaceship, will carry out a Mars walk.

在模拟飞船中飞到红色星球的火星500任务，将进行火星行走任务。

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MSL's mission is to scour the red Planet for environments that may once have harbored, or may still harbor, microbial organisms.

不管这颗红色星球曾经孕育过微生物有机体还是这些小东西现在还依然健在，火星科学实验室的主要任务就是彻底摸清它的环境状况。

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It means that MSL could be the last American surface mission to the Red Planet for many years.

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The spacecraft's mass at launch was just over 13 tonnes, but some 10 tonnes of this was the fuel it expected to use in the course of its mission to the Red Planet's largest moon.

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Some of the latest images from NASA's Global Surveyor mapping mission around the red planet are making that abundantly clear, a group of scientists and engineers interested in NASA's Mars mission set for a 2001 launch learned recently.

CNN: High-resolution images help prepare for Mars landing