Yet his theories about life on Mars may have had more lasting influence on many writers of imaginary stories.

VOA: special.2010.07.11

How can whether or not I am the same guy as the guy who was lecturing to you on Tuesday depend on what's happening in Pennsylvania or Australia or Mars?

我跟星期二给你们讲课的人,是否为同一人这个问题,怎么能取决于在宾州或澳州或火星发生的事情？

耶鲁公开课 - 死亡课程节选

Volcanoes on Mars suggest to Sam that the same kinds of processes that take place on Earth happen on other worlds.

VOA: special.2010.07.28

Percival Lowell did not know that his eyes played a part in the markings he saw on Mars.

VOA: special.2010.07.11

In January,a team of NASA and university scientists announced that they had found methane gas on Mars.

VOA: special.2009.12.30

why not on Mars,too? I walked toward him and in a normal voice announced my name and said I had come in peace.

VOA: special.2010.07.17

Mars landers and rovers were designed to look for signs of liquid water that may have flowed on Mars in the distant past.

VOA: special.2010.07.28

Because of the gravity on Mars, spacesuits may have to be designed to be lighter than suits used in orbit or on the moon.

VOA: special.2011.04.06

Not once did I question this fact. My mind told me I was on Mars as your mind tells you that you are upon Earth.

VOA: special.2010.07.10

We also talk to a NASA expert about the discovery of methane gas on Mars.

VOA: special.2009.12.30

This raises the exciting possibility that life may have existed in the past on Mars.

VOA: special.2009.12.30

The orbiter could finally provide evidence about how methane on Mars is created and destroyed.

VOA: special.2009.12.30

In nineteen sixty-five, NASA's Mariner Four spacecraft showed that no waterways existed on Mars.

VOA: special.2010.07.11

On Mars Day, hundreds of people waited for their chance to use robot technology.

VOA: special.2010.07.28

He found notes that described markings on Mars that Mister Schiaparelli called "canali" Mister Lowell came to believe that intelligent life created the markings on Mars.

VOA: special.2010.07.11

I once landed on my face. I soon learned that it took much less effort for me to move on Mars than it did on Earth.

VOA: special.2010.07.10

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

VOA: special.2010.07.28

Steve Squyres says one of the most complex projects involves landing on Mars.

VOA: special.2010.05.25

And his theories about waterways and complex life on Mars have been disproved.

VOA: special.2010.07.11

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

VOA: special.2010.07.17

Orbiting spacecraft have shown a huge mountain on Mars called Olympus Mons.

VOA: special.2010.07.28

One such gypsum field was found on Mars six years ago.

VOA: special.2010.05.25

He supports focusing on Mars rather than returning to the moon.

VOA: special.2010.04.28

He has been working on Mars Day for four years.

VOA: special.2010.07.28

But it formed on Mars long before that.

VOA: special.2010.07.28

I immediately knew then I was on Mars.

VOA: special.2010.07.10

The event,on July sixteenth, was a rare chance for planetary scientists to share with the public the mysteries of Mars.

VOA: special.2010.07.28

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

VOA: special.2010.06.27

You can listen to part four of the science fiction story "A Princess of Mars" on our program AMERICAN STORIES this Saturday.

VOA: special.2010.07.28

He said he could see changes in the seasons on the surface of Mars.

VOA: special.2010.07.11