Also left forever on the moon is a sign with these words: "Here men from the planet Earth first set foot on the Moon July,nineteen sixty-nine A.D.

VOA: special.2009.07.15

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

VOA: special.2010.06.27

That was from the movie "The State of the Planet's Oceans" made by Hal and Marilyn Weiner.

VOA: special.2009.03.25

These lines follow underwater mountains, where hot liquid rock flows up from deep inside the planet.

VOA: special.2010.01.12

"We initially were rather concerned as how our parents would react, as we came from different religions, different backgrounds, two different parts of the planet.

VOA: special.2011.05.09

The planet's orbit lies about four billion five hundred million kilometers from the sun.

VOA: special.2011.07.27

They also saw meteorites known to have come from the red, or reddish,planet.

VOA: special.2010.07.28

New crust is created as melted rock pushes up from inside the planet.

VOA: special.2010.01.12

This South African movie tells about the mistreatment of aliens from another planet.

VOA: special.2010.03.01

He believes they will create the political will to help us save the planet - and ourselves - from disaster.

VOA: standard.2010.04.21