TRAPPIST-1 planetary system

An artist’s impression of what the TRAPPIST-1 planetary system may look like showing (from left to right) TRAPPIST-1 a, b, c, d, e, f, g and h, based on available data about the planets' diameters, masses and distances from the host star. Of these, TRAPPIST-1 d, e, f and g are thought to be the most Earth-like planets.
An artist’s impression of what the TRAPPIST-1 planetary system may look like showing (from left to right) TRAPPIST-1 a, b, c, d, e, f, g and h, based on available data about the planets' diameters, masses and distances from the host star. Of these, TRAPPIST-1 d, e, f and g are thought to be the most Earth-like planets.
NASA/JPL-Caltech
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Attribution (CC BY 4.0)