• Edwin Hubble discovered that there are galaxies outside our own.
  • His data would eventually show us how the Universe is changing.
  • Redshift occurs when the light source is moving away from you or when the space between you and the source is stretched.
  • Almost every galaxy in the Universe has a redshift.
  • The farther away a galaxy is, the faster it moves away from us.
  • Red-shift of galaxies is evidence that the universe is expanding.
  • Use the resource below to answer the questions that follow.
Select from the frequently asked questions below