Goldilocks zone
attrib.— «A planet orbiting a star at the right distance to stay suitably cosy is therefore said by astronomers to be in the star’s “Goldilocks zone”—or, when they are being more serious, the “habitable zone.”» —“All Possible Worlds” Economist (U.K.) Jan. 25, 1997. (source: Double-Tongued Dictionary)
Further reading
What exactly is a planet? Controversy over this question led to Pluto’s redefinition, along with a brand-new English word. And: Some people now use the phrase all the things! to mean and whatnot or you know what I mean. This new sense of all...
There are eight major planets, but more than a million minor ones, including asteroids. If you discover one, you get the honor of naming it. The Dictionary of Minor Planet Names includes minor planets named for rock bands, jazz musicians, poets, and...