He quickly learns that gravity on Mars is much less than on Earth.

VOA: special.2010.07.17

This is his portrait of Mars. Mars is the god of war.

这是他的《战神马尔斯》

耶鲁公开课 - 欧洲文明课程节选

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

"Why should we do something when we've already done it." "Going to the moon or going to Mars is about as interesting to people as say going to Antarctica."

VOA: standard.2010.04.15

Marc Rayman says Vesta appears to have a layered structure, one that is similar to planets like Earth, Mars and Venus.

VOA: special.2011.07.27

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

Another robot is designed to move and turn in a way that is similar to the Mars rovers.

VOA: special.2010.07.28

Eight-year-old Sam learned that the ancient description of Mars as red is not exactly right.

VOA: special.2010.07.28

But the goal is to prepare for future robotic and human visits to Mars.

VOA: special.2010.07.28

Steve Squyres is the chief scientist for the American space agency's Mars Rover Project.

VOA: special.2010.05.25

"You'll find something on Earth as close to what is pretty much on Mars.

VOA: special.2010.07.28

It is the first book in a series that Mister Burroughs wrote about a man who travels to Mars during the last years of the eighteen hundreds.

VOA: special.2010.07.10

Michael Meyer is lead scientist for NASA's Mars Exploration Program in Washington.

VOA: special.2009.12.30

"That the closest thing to Mars-the stuff-is from volcanoes mostly."

VOA: special.2010.07.28

This is very similar to Mister Lowell's description of Mars.

VOA: special.2010.07.11

The book is called "A Princess of Mars."

VOA: special.2010.07.10

Mars-500 is the third in a series of interplanetary flight simulations.

VOA: standard.2010.06.02