habitable zone

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Related to Habitability zone: Circumstellar habitable zone

habitable zone

n.
The region in a stellar system where the surface temperatures of planets can sustain liquid water and therefore hold the highest probability for the existence of life. Also called Goldilocks zone.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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They argue that since F-type stars have a wider habitability zone - the area where conditions are right for general Earth-type planets to develop and sustain life - they warrant additional consideration.
To determine whether a planet could support life, astronomers first look at whether it falls within its star's habitability zone, the Goldilocks distance that is not too hot or too cold.
This volume summarizes knowledge of these with graphs showing planetary orbits; information on primary star location and make-up; mapping of the system's habitability zone in relation to planetary orbits; and information on the planets axis, eccentricity, and mass.