Leo's royal star Regulus and red planet Mars appear in a colorful pairing just above the horizon in this starry skyscape.

狮子座的王者之星轩辕十四和红色行星火星，在这地平线上繁星闪耀的天空中交相辉映。

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The planet Mars is the closest and most similar planet to Earth.

火星是离地球最近、和地球最相似的行星。

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Mars is the lightest planet in the solar system, which makes Mars the second smallest planet in the solar system.

火星是太阳系中最轻的行星，这使得火星成为太阳系中第二小的行星。

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NASA plans to send the Mars Science Laboratory to the red planet in the autumn of two thousand eleven.

VOA: special.2009.12.30

Mercury is a liquid metal, and mercury, the planet, is the fastest moving naked eye heavenly body. Mars, iron, why is Mars red?

水银是液态金属，水银，行星，是肉眼能看到的运动最快的天体,火星，铁，为什么火星是红色的？

麻省理工公开课 - 固态化学导论课程节选

Moving pictures from before World War Two showed a man named Buck Rogers landing on the planet Mars.

VOA: special.2010.06.27

Mr. McCuistion noted that since efforts world-wide to explore Mars planet began in 1960, only 40% of the missions launched from Earth have succeeded.

WSJ: NASA's Robot Lab Curiosity Nears Mars

Liquid water is not something scientists expect to be apparent on Mars because the planet is so cold and dry, Squyres said.

CNN: Rover Curiosity near Mars landing

Its abundance on Mars suggests that the planet has been cold and dry throughout most of its history.

ECONOMIST: Martian chronicles