อ้างอิง ของ แทรปพิสต์-1จี

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  4. "Temperate Earth-Sized Planets Found in Extraordinarily Rich Planetary System TRAPPIST-1". SpaceRef. 22 February 2017. สืบค้นเมื่อ 11 February 2017.
  5. "NASA telescope reveals largest batch of Earth-size, habitable-zone planets around single star". Exoplanet Exploration: Planets Beyond our Solar System (Press release). สืบค้นเมื่อ 22 February 2017.