Rockman imagines a terrible future in which plants and animals must be sent into space to protect them from Earth's pollution.

VOA: special.2010.12.15

This meant the Apollo Eight astronauts could fire the rocket that would send them from Earth orbit toward the moon.

VOA: special.2009.07.08

That was when men from Earth -- American astronauts flew their Apollo Eleven spacecraft to the moon, landed and returned home safely.

VOA: special.2009.07.29

They appear blue. Observations of forty-six galaxies showed Hubble that the galaxies were traveling away from Earth.

VOA: special.2009.04.29

Astronomers say it was probably less than one kilometer in size too small to see from Earth.

VOA: special.2009.08.25

An astronomer at Harvard College, Henrietta Leavitt, had discovered that these periods of brightness could be used to measure the star's distance from Earth.

VOA: special.2009.04.29

The astronauts were three hundred twenty thousand kilometers from Earth with little oxygen, electricity and water.

VOA: special.2009.07.22

The observations also showed that the speed was linked directly to the galaxies' distance from Earth.

VOA: special.2009.04.29

Scientists say extensive observations from earth-based telescopes are needed to confirm the existence of the planets.

VOA: special.2011.02.09

He discovered that galaxies are moving away from Earth at speeds between three hundred kilometers a second and one thousand eight hundred kilometers a second.

VOA: special.2009.04.29

It cannot be seen from Earth without the aid of binoculars or a telescope.

VOA: special.2011.07.27

But some orchids that grow naturally are in danger of disappearing from Earth.

VOA: special.2010.04.06

After they land,meteorites can pick up small organisms and chemicals from Earth's environment.

VOA: special.2011.06.22

Ku Shu-Lan lived with her husband in a cave carved from earth.

VOA: special.2010.04.14