Goldilocks planet
nounEtymology From the children's story Goldilocks, in which one of the bowls of porridge the protagonist tries is neither too hot nor too cold, but just right.
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Astronomy, Natural sciences A planet which orbits in the habitable zone around a star, where temperatures like those on Earth occur, allowing for the possible existence of liquid water and of life.
- Related terms
- Goldilocks principle, Goldilocks zone, exo-Earth