Find out how the Galex space telescope is determining the age of galaxies using red-shifted light. View pictures taken by Galex. This site also has a game which involves determining the ages of objects.

Investigate how astronomers detect movements of stars by studying the Doppler effect on the star's light spectrum. Construct a model that illustrates this concept underlying red shift.

Investigate the Big Bang Theory of the origin of the universe by researching the light spectrum and the actions of light waves. Create models that illustrate red shift in a moving star and the expansion of the universe.