Oklahomans and Space
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 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.