Science Chapter 11: Stars and Galaxies in the Universe
11.1 Stars and Galaxies in the Universe

11.1  Stars and Galaxies in the Universe                      
   
UNIVERSE
\(\downarrow\)
GALAXY
   

Galaxies

Types of galaxies
\(\swarrow\) \(\downarrow\) \(\searrow\)
Spiral Elliptical Irregular

 * Andromeda

 * The Milky Way

 * Ursa Major

 * Messier 87

 * Small Magellanic Cloud

 * Large Magellanic Cloud


The Milky Way

  • The Milky Way is a medium large spiral galaxy
  • Our solar system is located at the edge of one of the spiral arms of the Milky Way
  • It consists of approximately 200 billion stars and the Sun is one of it

Stars

 


Characteristics to Classify Stars

  • Colour 
  • Size
  • Distance
  • Brightness
  • Temperature