Beyond the Solar System

Beyond the Solar System

1. Milky Way Galaxy

   • Our sun is one of many stars in the milky way
   • The distance between stars is million times bigger than inter-planet distances

2. Whole Universe has more than a thousand million galaxies

   • Inter galaxy distances are much greater than inter-star distances

3. Distances in space can be measured using light years

   • Distance travelled by light in a year
   • Light travels at 300000km/s

4. Relative Sizes, Distances & Ages

   • Earth -> Sun -> Earths Orbit -> Solar System -> Nearest Star -> Milky Way -> Nearest Galaxy
   • Earth and the sun are about 5000 million years old
   • Universe is 14000 million years old