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Three possible interiors of the TRAPPIST-1 exoplanets. All seven planets have very similar densities, so they likely have a similar compositions. (NASA/JPL-Caltech)

 

Three possible interiors of the TRAPPIST-1 exoplanets. All seven planets have very similar densities, so they likely have a similar compositions. (NASA/JPL-Caltech)

Three possible interiors of the TRAPPIST-1 exoplanets. All seven planets have very similar densities, so they likely have a similar compositions. (NASA/JPL-Caltech)


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