Waves and the Universe (Physics Topic 3)

Waves and the Universe (Physics Topic 3)

1. Galaxies and the Universe

   • List of galaxies
   • A galaxy is a system of billions of stars held by gravitational attraction
   • Our solar system is located in the Milky way - containing around 200 billion stars

2. Other regions of the electromagnetic spectrum

   • Modern telescopes
     • Stars emit electromagnetic waves. Some do not, therefore can not be seen by the naked eye/simple telescopes
     • Examples: 'Lovell Cheshire' UK Radio wave & 'SPT Antarctica' South Pole Microwave

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