Red shift

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Created by
Harmony Chow

Cards (8)

  • Red shift - when the wavelength of the light is stretched, so the light is seen as 'shifted' towards the red part of the spectrum
  • Blue shift - when the wavelength of the light is compressed, so the light is seen as 'shifted' towards the blue part of the spectrum.
  • The more red-shifted the light from a galaxy is, the faster the galaxy is moving away from Earth.
  • about 13.8 billion years ago the whole Universe was a very small, extremely hot and dense region. From this tiny point, the whole Universe expanded outwards to what exists today.
  • the further away the galaxies are, the faster they are moving
  • Dark matter makes up about 27% of the total mass of the universe.
  • Dark energy makes up about 68% of the total mass of the universe.
  • Red longer wavelengths
    Blue shorter wavelengths