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Terrestrial Exoplanets

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NASA’s TESS Mission Scores ‘Hat Trick’ With 3 New Worlds

NASA’s TESS Mission Finds Its Smallest Planet Yet

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This illustration shows the seven Earth-size planets of TRAPPIST-1. The image does not show the planets' orbits to scale, but highlights possibilities for how the surfaces of these intriguing worlds might look.

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A slender, glowing crescent of Mars curves across the bottom of a completely black void, revealing its dusty reddish-orange surface and a thin, hazy blue atmospheric glow along the illuminated edge.

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