Three of the TRAPPIST-1 planets — TRAPPIST-1e, f and g — dwell in their star’s so-called “habitable zone,” shown in green. This is the band around the star where temperatures are just right — not too hot, not too cold — for liquid water to pool on the surface of an Earth-like world. (NASA/JPL-Caltech)
Home Three of the TRAPPIST-1 planets — TRAPPIST-1e, f and g — dwell in their star’s so-called “habitable zone,” shown in green. This is the band around the star where temperatures are just right — not too hot, not too cold — for liquid water to pool on the surface of an Earth-like world. (NASA/JPL-Caltech) Three of the TRAPPIST-1 planets -- TRAPPIST-1e, f and g -- dwell in their star's so-called "habitable zone," shown in green. This is the band around the star where temperatures are just right -- not too hot, not too cold -- for liquid water to pool on the surface of an Earth-like world. (NASA/JPL-Caltech)
Three of the TRAPPIST-1 planets — TRAPPIST-1e, f and g — dwell in their star’s so-called “habitable zone,” shown in green. This is the band around the star where temperatures are just right — not too hot, not too cold — for liquid water to pool on the surface of an Earth-like world. (NASA/JPL-Caltech)
