Eagle moved into the orbit of the command module.

VOA: special.2009.07.15

Small changes in the movement of Neptune led several astronomers to believe that an undiscovered planet was affecting Neptune's orbit.

VOA: special.2010.07.11

Glenn's flight plan called for him to spend most of the first orbit getting used to the feeling of being weightless.

VOA: special.2009.06.17

Next year, the Chinese plan to launch a small space laboratory to practice docking of spacecraft in orbit.

VOA: special.2010.04.28

The twenty-two meter long rocket would put a little scientific satellite into orbit as one of the events of the international geophysical year.

VOA: special.2009.06.10

Iran launched its first satellite into orbit in February -- the thirtieth anniversary of the Islamic revolution.

VOA: special.2009.05.23

He says there are more than three hundred thousand small objects or pieces of debris in orbit that are larger than one centimeter.

VOA: special.2009.04.01

During the second orbit, one of these signals warned that the heat shield might not be locked firmly to the bottom of the spacecraft.

VOA: special.2009.06.17

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

But when the telescope reached orbit, NASA scientists were shocked to discover that the costly mirror of the telescope had not been shaped correctly.

VOA: special.2009.09.30

Near the end of his third orbit, Glenn fired other rockets to slow his speed.

VOA: special.2009.06.17

And they broadcast, for the first time, live television pictures of men in orbit.

VOA: special.2009.07.08

And he says five of the planetary candidates are both close to the size of Earth and orbit in the habitable area of their parent stars.

VOA: special.2011.02.09

The number of man-made objects in Earth orbit has been growing each year.

VOA: special.2009.04.01

The Hubble Space Telescope was launched into orbit in April of nineteen ninety.

VOA: special.2009.09.30

Before the collision, Iridium had a group of sixty-six satellites in orbit.

VOA: special.2009.04.01

We think of the telescope as moving slowly in its orbit.

VOA: special.2009.09.30

Near the end of the first orbit, Glenn reported a problem.

VOA: special.2009.06.17

NASA hopes that Dawn's year long orbit around Vesta will help scientists learn more about the development of the solar system, and how asteroids and other space objects were created.

VOA: special.2011.07.27

"We will use the tremendous capabilities of this ion propulsion system to climb out of orbit around Vesta, travel for almost another three years through the asteroid belt to dwarf planet Ceres and then go into orbit around Ceres and undertake the same kind of measurements there that we'll be doing at Vesta.

VOA: special.2011.07.27

An estimated half million pieces of debris litter the Earth's orbit as a result of man's exploration of space.

VOA: standard.2010.07.24

It was the first manned mission to orbit the moon. "NASA has been burdened with a lack of enthusiasm by the taxpayers."

VOA: standard.2010.04.15

They warn that the amount of junk in Earth's orbit is increasing and, as it does,the risks to satellites and space vehicles,also rise.

VOA: standard.2010.07.24