Exoplanet TRAPPIST-1e May Be Just Right for Life

Are the planets orbiting TRAPPIST-1 habitable? (image credit: NASA).
Tucked between a boiled-away desert and a giant snowball, an alien world called TRAPPIST-1e may be the only habitable planet in a newly discovered batch of seven, according to a new climate model.
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Exoplanet TRAPPIST-1e May Be Just Right for Life