When the search began, a half-century ago, it seemed sensible to assume that as technological civilization increased on a planet, more and more signals would be broadcast into space.

VOA: standard.2010.04.16

That's huge for a planet of less than 7 billion people.

VOA: standard.2010.07.23

It was like going to a different planet. It was beautiful, it was an amazing,a frightening just yet invigorating experience."

VOA: special.2010.06.21

The movie is about a man who travels to a distant planet about one hundred fifty years in the future.

VOA: special.2010.01.01

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

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

VOA: special.2010.06.27

A new report says mangrove forests store more planet-warming carbon dioxide than almost any other ecosystem on Earth.

VOA: special.2011.05.10

Scientists believe it is evidence that a large object struck Jupiter, cutting a hole in the atmosphere of the huge, gaseous planet.

VOA: special.2009.08.25

Today,we take a virtual walk down a famous street found in almost every land on the planet.

VOA: special.2009.11.27

The Web site, a book and a series of art projects around the world will bring attention to the disappearing biodiversity on our planet.

VOA: special.2010.04.21

On March thirteenth, Clyde Tombaugh and V.M Slipher announced the discovery of a new planet.

VOA: special.2010.07.11

His first productions in hip-hop were in nineteen ninety-five in a group called Planet Hemp.

VOA: special.2009.11.25

Instead,these experts say, our planet is experiencing a normal series of temperature changes.

VOA: special.2010.01.19

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

There is a big budget science-fiction movie about humans on an alien planet.

VOA: special.2010.03.01

In fact, he failed to recognize Planet X in a few photographs.

VOA: special.2010.07.11