Astronomy Concepts

Front

Stars appear to move

Back

because of the Earth's rotation.

Front

The moon shines

Back

because it reflects light from the sun.

Front

The moon and planets shine

Back

because they reflect light from the sun.

Front

Earth's moon

Back

The bright and largest object in our sky; Earth's only natural satellite.

Front

Satellite

Back

A body that orbits a planet.

Front

Stars in the night sky

Back

Appear like small twinkles.

Front

Star composition

Back

A giant ball of superheated gas, or plasma, composed of hydrogen and helium.

Front

Star positions from Earth

Back

The positions of stars from Earth relative to each other do not seem to change.

Front

Definition of a planet

Back

A planet is an object that orbits the sun.

Front

Criteria for a planet's size

Back

It must be large enough to have become rounded by its own gravity.