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Oklahomans in Space

Glossary

Astronaut: Someone who travels into space.

Atmosphere: The gases that are held close to the surface of a planet by the force of gravity.

Cold War: The state of political hostility that existed between the United States and the Union of Soviet Socialist Republics and their allies.

Constellation: A group of stars that make a pattern.

Gravity: An invisible force of attraction between two objects.

Moon: A small ball of rock or gas that revolves around a planet.

National Aeronautics and Space Administration (NASA): The United States government agency that directs all public exploration and travel in space.

Orbit: Circling around something else.

Oxygen: A gas that is needed for humans and animals to breathe.

Planet: A ball of rock and gas that circles around a star.

Rocket: A manmade craft capable of leaving Earth.

Solar system: The area where a group of planets go around a sun.

Space race: The race between the United States and the Union of Soviet Socialist Republics to be the first nation to reach Earth's Moon.

Star: A huge ball of burning gas.

Sun: The star at the center of our solar system.



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