Habitable Zone

In astronomy and astrobiology, the circumstellar habitable zone, 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 planets capable of supporting Earth-like extraterrestrial life and intelligence. The habitable zone is also called the Goldilocks zone, a metaphor, allusion and antonomasia of the children's fairy tale of "Goldilocks and the Three Bears", in which a little girl chooses from sets of three items, ignoring the ones that are too extreme, and settling on the one in the middle, which is "just right".

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Up to 79% of planets in the ‘habitable zone’ may not be good for life

Up to 74% of planets in the ‘habitable zone’ may not be good for life

How Life Reshapes the Habitable Zone

NASA Just Discovered a Rare Earth-Sized Planet in a Habitable Zone

NASA has discovered an Earth-sized planet orbiting in the habitable zone of its star

A Second Earth-Sized Planet in the Habitable Zone of the M Dwarf, TOI-700

TESS Discovers Second Earth-Sized Planet in Habitable Zone of TOI-700

A Rocky 'Super-Earth' in the Habitable Zone

Super-Earth Found Near the Habitable Zone of Red Dwarf

A Planet has Been Found That Shifts In and Out of the Habitable Zone

Astronomers Find a Waterworld Planet With Deep Oceans in the Habitable Zone

[Journal Article by Publications of the Astronomical Society of Japan] Super-Earth orbiting near the inner edge of the habitable zone around the M4.5 dwarf Ross 508

Super-Earth planet zips through the habitable zone of red dwarf star

An exoplanet has been discovered by Subaru Telescope. The planet, Ross 508b, is a super-Earth and is located near the habitable zone. Such a planet may be able to retain water on its surface

Super-earth skimming habitable zone of red dwarf

One weird type of exoplanet could support life outside the habitable zone. (Hydrogen And Helium atmospheres could keep exoplanets warm enough to be habitable for billions of years, even at huge distances from their stars.)

Astronomers Have Found a Super-Earth Near The Habitable Zone of Its Star

Astronomy & Astrophysics 101: Habitable Zone

Planetary Migration Timescale and Its Influence on Life’s Ability to Occupy a Habitable Zone

An Earthlike planet may be orbiting in a dead star's 'habitable zone'