[~]/sombero_galaxy_revised.jpg
Picture of the Sombrero galaxy. Photo courtesy of HST/NASA/ESA. Public
domain.
  • Redshift happens when light moves away from the observer. The absorption bands in the color spectrum move towards the red, longer wavelength-end of the color spectrum
  • Blueshift happens when light moves towards the observer. The absorption bands in the color spectrum move towards the blue, shorter wavelength-end of the color spectrum
  • Scientific notation is a way to format numbers. Example: 4.35 x 106
  • Redshift is calculated with the following formula:

[~]/redshift_equation.JPG

     
Last modified: Wednesday, 7 September 2011, 4:27 PM