+117e refers to a recently discovered [Exoplanet](/wiki/Exoplanet) located beyond the Orion Arm, notable for its extremely dense, metallic core. It orbits a dim [Brown Dwarf](/wiki/Brown_Dwarf), receiving only faint starlight, yet observations suggest the presence of a subsurface ocean.
+## See also
+- [Planet](/wiki/Planet)
+- [Star](/wiki/Star)
+- [Astronomy](/wiki/Astronomy)
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