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Rare-earth metals are discovered in KELT-9b, an exoplanet located 650 light-years away from Earth.

  1. Astronomy Now

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  1. Rare-Earth metals are discovered in KELT-9b, a exoplanet located 650 light-years away from Earth.
  2. Rare-earth metals are discovered in KELT-9b, an exoplanet located 650 light-years away from Earth.

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