Say you learn something new, like how to say "thank you" in Russian, or the peak temperature of a hot day on Mars.

比如说你学到一些新东西，像如何用俄语说“谢谢”，或者火星上最热一天的最高温度。

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While I was proud to fly on the shuttle, tomorrow's explorers will now dream of one day walking on Mars.

当我那时为坐航天飞机飞行而感到骄傲时，明天的探索者现在会梦想着有一天在火星上行走。

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With Venus moving so close to Mars this month, even though expenses will concern you as they rise, Venus will likely save the day by bringing you new sources of income.

这个月金星将会和火星凑得很近，你的花销将增多，而与此同时，金星也会为你带来财源滚滚。

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Mars Day at the Smithsonian Air and Space Museum in Washington is a celebration of our solar system's most famous planet.

VOA: special.2010.07.28

The Smithsonian's Mars Day offered a chance for people of all ages to touch Mars, or at least a piece of it.

VOA: special.2010.07.28

Visitors to Mars Day crowded around a piece of the meteorite in the huge Milestones of Flight Gallery.

VOA: special.2010.07.28

The European Space Agency and the Russian Institute of Biomedial Problems are scheduled to run a joint 520-day mock Mars expedition this year aimed to study the effects of extreme isolation and confinement on 12 volunteers.

CNN: Mars on the brain? Red Planet pioneers to face cosmic mind trip

Neither was unexpected, but the details improve understanding of atmospheric cycles on present-day Mars, which helps with estimating how the cycles may have operated in the past.

ENGADGET: Curiosity rover finds radiation levels on Mars are safe for humans

But what's novel about the CEAC design is that it incorporates a bio-regenerative life-support system -- the kind of technology that could one day not only feed an outpost on the moon or Mars, but also provide it with oxygen and recycle its water.

CNN: To boldly grow where no one has grown before