Astronomers now are upping that likelihood, announcing that they’ve identified a star system with up to seven planets — three of which could potentially host life — 22 light-years away.
The likelihood that conditions could support life on at least one of those planets, given that there are three terrestrial-mass planets in the habitable zone of one system, is “tremendous,” according to at least one scientist. The “habitable zone” is the area near a star in which a planet can theoretically hold liquid water. In our own solar system, Venus is close to the inner edge of potential habitability, while Mars is closer to the outer edge.
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