From 3 June, the Mars 500 project will send a "crew" of six on a simulated 520-day round trip to the Red Planet and back.

从6月3日起，火星500计划将派遣6名“船员”进行一场环游红色星球并返回的520天模拟旅行。

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Sydney was one of the top 10 most popular topics on Twitter today, as the city's skyline and landscape was variously likened to Mars, the aftermath of an alien attack and judgment day.

今天，悉尼成了Twitter上的十大热门话题之一，城市的天际和景观分别被人们比作火星、外星人攻击之后的废墟或者是面临末日审判的地方。

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But it will not be bored to the study of philosophical discussion of the day special theory of relativity or the human ability to settle on Mars and be too worried.

但也不会无聊到整天研究哲学讨论狭义相对论或人类能否移居火星而过分担忧。

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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