____________ study outer space.

• Astronomers

• Climatologists

All stars make their own light.

• True

• False

The ________is the closest star to Earth.

• moon

• Sun

Lights in the sky is about _______

• moon

• stars

A planet is a very large object that moves around the Sun.

• True

• False

_____________ is the planet on which we live.

• Earth

• Mars

Telescopes also help us observe stars.

• True

• False

A moon is a ball of _______ that moves around a planet.

• rock

• fire

Earth has three moon.

• True

• False

Astronomers use different tools to observe the sky.

• True

• False