Our solar system is in space.  Our solar system has a Sun, 8 planets and their moons.  The planets go around the Sun.

The Sun is a star.  The sun is very, very, big.  The Sun is in space.  The Sun is very, very hot.  The Sun is made of burning gas!

Planets are very big.  Planets are in space.  Planets can be made of rock or gases.  Earth is a planet.  There are 8 planets in our Solar System.

The Earth is very big.  The Earth is in space.  The Earth is made of rock.  The Earth goes around the Sun.

A moon is made of rock.  A moon os very big.  A moon is smaller than a planet.  A moon goes around a planet.

A planet goes around the Sun.  A moon goes around a planet.  This is called to orbit.  Orbit means to go around something.

Space is very big.  All the planets, Earth, the Sun, and moons are in space!  Stars are in space.  Space is very, very bog.  There is no air in space.