The United States space agency already uses an Aircraft Birdstrike Avoidance Radar at the Kennedy Space Center in Florida.

VOA: special.2009.04.01

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

People can learn about outer space at Chicago's Adler Planetarium and about life under the sea at the Shedd Aquarium.

VOA: special.2009.01.12

The atmosphere is about twenty-percent oxygen and eighty percent nitrogen from Earth's surface to where space begins at one-hundred-twenty kilometers up.

VOA: special.2011.04.06

They found that people who spend months in space lose bone strength at a faster rate than experts had thought.

VOA: special.2009.03.10

But, the space shuttle program has come to represent the success,and tragedy, of discovery at the limits of our world.

VOA: special.2011.07.27

The Californian band the Byrds was among the groups Bill Graham presented at the new space he called Fillmore West.

VOA: special.2010.12.03

Last week,British billionaire Sir Richard Branson showed his new spaceship Enterprise at the Mojave Air and Space Port in California.

VOA: special.2009.12.18

At the time President Kennedy first spoke about landing humans on the moon, the Soviet space program seemed far ahead.

VOA: special.2009.07.08

If not,she says, they may be at increased risk for age-related broken bones years after their visits to space.

VOA: special.2009.03.10

Scientists at the Goddard Space Flight Center in Greenbelt,Maryland, found the substance glycine in material brought back to Earth from a comet.

VOA: special.2009.09.30

The United States had decided at the very beginning of its space program that all launches would be open to news reporters.

VOA: special.2009.06.17

But one thing is sure. The discoveries in the meteorite helped shape policy and exploration efforts at the United States space agency,NASA.

VOA: special.2010.07.28

The team made the discovery by measuring the speed at which our galaxy is moving through space.

VOA: special.2009.01.20

And,we visit the Albert Einstein Planetarium at the Smithsonian National Air and Space Museum in Washington,D.C.

VOA: special.2010.09.29

And the team at Goddard Space Flight Center was testing extremely small amounts of material.

VOA: special.2009.09.30

And in nineteen ninety-eight, at age seventy-seven, he returned to space in an historic flight.

VOA: special.2009.06.17

At first, the Nuyorican moved to a rented space on Sixth Street in Loisaida.

VOA: special.2009.04.27

Scientists developed the new welding technology at the Marshall Space Flight Center in Montgomery,Alabama.

VOA: special.2009.12.30