Groups of starts that form patterns in the sky

The Milky Way, according to its shape is a

Mercury, Venus, Earth and Mars are

Jupiter, Saturn, Uranus and Neptune are

Moons that orbit planets are called

This movement causes the four seasons

A complete revolution of the Sun takes the Earth

How long does it take the Moon to revolve around the Earth

The rising and falling of the water level in the Sea is caused by

Giant spheres of very hot gas