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Astrophysics (Motion in the solar system (The Earth follows a curved path…

- - - - Zero in the middle – both positive and negative values
      - Numbers go the opposite direction – bright objects have low or negative values
      - Increase of one = increase of 2.5x
    - - How bright a star is viewed from Earth
      - Sun: -26.7
    - - Determines true brightness or 'luminosity'
      - Brightness when viewed from 32.68 light years
      - Sun: 4.8
- - - - Equal strength from every direction
      - Strength and wavelength is consistent with the Bang Bang taking place 13.8Bn years ago
    - - A number of extremely compact objects with very large luminosities were discovered
      - They were massively red-shifted
      - Only appear on the edge of the observable universe
        => only existed a long time ago
        –> had lost energy since the big bang so wouldn't exist now
    - - The wavelengths of distant galaxies had been shifted to the longer end of the spectrum (red)
      - Everything is moving away from everything