Celestial bodies

The most popular theory is that billion of years ago, a huge explosion causes all the matters in the Universe to form celestial bodies. This is called The

They are big balls of gas. Sun is one example:

• Galaxy

• Star

• Meteroids

• Asteroids

It is a group of stars that form a patter in the sky.

• Star

• Galaxy

• Constellation

• Comet

It is a huge collection of stars, dust and gas held together by gravity.

• Planets

• Stars

• Galaxy

• Comets

They have no light. They are round celestial bodies that orbit the Sun.

• Planets

• Asteroids

• Comets

• Meteroids

The are round and orbit the Sun like planets, but they are smaller than regular planets.

• Comets

• Dwarf planets

• Asteroids

• Stars

They are made of ice, dust and gases

• Asteroids

• Planets

• Comets

• Galaxies

They are rocks that orbit the Sun. They have irregular shapes..

They are small pieces of rocks that break away from an asteroid.