solar system

• our solar system is located in a galaxy called the

  milky way

  
• a cloud of dust and gas is

  nebula

  
• an example of a natural satellite is the

  moon that orbits the sun

  
• the sun is a

  star

  
• a supernova is an


  explosion of a massive star

  
• a supernova distributes

  the elements created by the fusion reactions in the star, throughout the universe.

  
• fusion reactions occur in the

  sun

  
• artificial satellites are

  man-made satellites that have been sent to space

  
• artificial satelites are used for

  G.P.S

  weather monitoring

  communications

  spying

  
• our solar system consists of the

  sun and eight planets

  
• inner planets are mostly

  rock

  
• outer planets are mostly

  gas

  
• the solar system is

  heliocentric

  
• all the planets in our solar system

  orbit the sun

  
• dwarf planets orbit the

  outer reaches of our solar system

  
• Pluto is not a 


  planet in our solar system