Solar System

The moon orbits Earth every___________days.

There is very little gravity inside a(n) _____________. The people there float to move around.

_____________________ used to be called a planet, but it isn't anymore.

The solar system has___________planets.

You have to be healthy and active to be a(n) _____________________.

Our galaxy is called the __________ because of its band of white light.

There are eight planets that _____________________ the sun.

Our _____________________ has eight planets and more than 170 moons.

Humans need the oxygen in __________ 's atmosphere to breathe.

The __________ is a huge star at the center of our solar system.