Junior Cycle Science ES Celestial bodies

A large group of stars held together by gravity

• Comet

• Star

• Galaxy

• Satellite

An object that revolves around a planet

• Asteroid

• Comet

• Star

• Satellite

A small, irregularly shaped rock made up of metal or minerals

• Asteroid

• Comet

• Star

• Planet

A body made up of small pieces of rock and ice with a tail

• Planet

• Comet

• Satellite

• Galaxy

A body made up of hot gases that can produce its own light

• Planet

• Solar system

• Star

• Galaxy

A very hot, very dense single point of expansion

• Supernova

• Singularity

• Eclipse

• Ellipse

This model considers that the Sun is the center of the universe.

• The Big Bang Theory

• Geocentric model

• Heliocentric model

The galaxy in which Mercury and Earth exist

• Milky Way Galaxy

• Andromeda Galaxy

• Universe

• orbit

A theory that says the universe began as a small point that expanded rapidly about 13.8 billion years ago

• Milky Way Galaxy

• universe

• orbit

• Big Bang Theory