Space and Astronomy Terms

Front

An irregularly shaped rock that orbits the Sun.

Back

Asteroid

Front

The center of an object.

Back

Core

Front

A hole in the ground caused by the impact of an object from space.

Back

Crater

Front

The force that pulls all objects toward each other.

Back

Gravity

Front

A huge ball of rock that travels around a planet; a natural satellite.

Back

Moon

Front

To revolve around another object.

Back

Orbit

Front

A very large object that orbits a star.

Back

Planet

Front

A natural or human-made object that orbits Earth or another object in space.

Back

Satellite

Front

A body in outer space, made of hot gases, that shines in the night sky.

Back

Star

Front

Like Earth; describes planets that are rocky and Earthlike in size.

Back

Terrestrial planet