Why is Earth special?

HideShow resource information
  • Created by: maddy
  • Created on: 27-04-13 18:17

Why is Earth special?

Life, as we know it, requires liquid water. There would certainly be none of this on the four gas giants which are so far from the sun. Ice caps have been discovered on Mars but not liquid water yet. The surface of Mars does, however, show signs of erosion by


No comments have yet been made

Similar Astronomy resources:

See all Astronomy resources »