Habitable zone

Habitable zone, or circumstellar habitable zone (CHZ) is a term in astronomy and astrobiology, that refers to the range of orbits around a star which are based on Earth's position to the Sun. Calculations for a star system's CHZ is contingent to the amount of radiant energy Earth receives from the Sun in the Solar System, to hypothetically support a planetary surface with liquid water and sufficient atmospheric pressure for life.Su-Shu Huang, American Scientist 47, 3, pp. 397- 402 (1959)J. F. Kasting, D. P. Whitmire, R. T. Reynolds, Icarus 101, 108 (1993). 
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Category:Glossary