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trainee


a person who is taught skills for a new job

Astronaut trainees learn how to live in space.

orbit


to follow a curved path around a star, moon, or planet

The Earth’s moon makes a complete orbit around the planet about once every 27 days.

engineering


using science and math to solve problems

Workers at NASA are engineering a new spacesuit for astronauts to wear.

asteroid


a rocky object that orbits the sun

An asteroid can be a few feet to hundreds of miles wide.

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