Space E.5 Vocabulary

Front

A rocky object that orbits the Sun and is much smaller than a planet or moon.

Back

Asteroid

Front

A large collection of stars, gases, and dust that are part of the universe

Back

Galaxy

Front

large bodies that orbit the sun within the asteroid belt; smaller, rocky bodies.

Back

Inner Planet

Front

A natural mass that revolves around a planet.

Back

Moon

Front

A large body that orbits a star.

Back

Planet

Front

When one object orbits another object.

Back

Revolution

Front

A large object in space made of gas and produces its own light.

Back

Star

Front

A space body made of ice and dust, and often develops one or more long tails when near the Sun.

Back

Comet

Front

Large bodies that orbit outside of the asteroid belt; larger, gaseous bodies.

Back

Outer Planet

Front

When an object turns, or spins, on an axis or a center.

Back

Rotation