Institute of Astronomy

Supporting life on other planets

Published on 28/02/2011 

What is the Habitable Zone?

The habitable zone is a region around a star where an orbiting planet could host liquid water. It is sometimes also known as the Goldilocks Zone, because the planet must not be too close to the star (where any water will vapourise) and not too far from the star (where water will freeze).

Page last updated: 2 May 2011 at 11:10