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Universe (Radiation # (Shifts (Blue shift (Tells if something is…

- - - - Tells if something is travailing towards the observer
      - makes the waves shorter
    - - Tells if something is travailing away from the observer
      - makes the waves longer
  - - - electromagnetic spectrum
        
        all radiation travails at the speed light high energy radiation is more dangerous then low energy radiation
      - gamma radiation
        
        is the most dangerous of the radiation. its wavelength is the smallest wavelength
      - x-ray
        
        can pass through soft tissue but it can not pass through hard tissue like teeth and bones.
      - ultraviolet
        
        mostly to comes from the sun. gives vitamin D,crime investigation
      - infrared
        
        invisible to the human eye but can be detected by your skin
      - visible light #
        
        is radiation that can be seen by the human eye it is seen as color plants use it as photosynthesis.
      - microwave
        
        are long waves and have a low energy so it is not as dangerous of the gamma radiations
      - radiowaves
        
        are the longest waves of radiation,they are used for communication,radar and satellites.
- - - - can see where things would be if we went back in time
      - can zoom in for closer examinations
    - - can see more detail
      - can zoom
      - can see farther
      - see the red shift and blue shift
  - - - tells if something is moving away from the obsirver
    - - matter = energy
      - energy = matter
      - help us figure out our universe and how it could have started
  - - - Galileo
        
        Telescope made discovering thing a lot faster and better
      - Aristotle(4th century BCE)
        
        thinks the Sun,Moon,planets, and stars revolve around stationary earth
      - Johannes Kepler(1610)
        
        Discoverer that the planets orbit around the sun
      - Nicolaus Copernicus(1543)
        
        Published his heliocentric theory
      - Ptolemy(2nd century AD)
        
        Published a book that uses mathematical procedures used to calculate future positions of the Sun,Moon,planets, and stars
      - Sir Issac Newton(1687)
        
        Published the laws of motion
      - Albert Einstein(1915)
        
        Published the General Theory of Relativity
      - Henrietta Leavitt(1912)
        
        Discoverer an important relationship concerning Cepheid variable stars
      - Edwin Hubble (1889-1953)
        
        Discoed another galaxy
- - - - turned into matter
        
        then atoms