<P> In astronomy and astrobiology , the circumstellar habitable zone ( CHZ ) , or simply the habitable zone , is the range of orbits around a star within which a planetary surface can support liquid water given sufficient atmospheric pressure . The bounds of the CHZ are based on Earth 's position in the Solar System and the amount of radiant energy it receives from the Sun . Due to the importance of liquid water to Earth 's biosphere , the nature of the CHZ and the objects within it may be instrumental in determining the scope and distribution of Earth - like extraterrestrial life and intelligence . </P>
<P> In astronomy and astrobiology , the circumstellar habitable zone ( CHZ ) , or simply the habitable zone , is the range of orbits around a star within which a planetary surface can support liquid water given sufficient atmospheric pressure . The bounds of the CHZ are based on Earth 's position in the Solar System and the amount of radiant energy it receives from the Sun . Due to the importance of liquid water to Earth 's biosphere , the nature of the CHZ and the objects within it may be instrumental in determining the scope and distribution of Earth - like extraterrestrial life and intelligence . </P>
the habitable zone is the region around a star where
the habitable zone is the region around a star where
a planetary surface can support liquid water given sufficient atmospheric pressure
a planetary surface can support liquid water given sufficient atmospheric pressure