brown dwarf definition

  • noun:
    • A celestial body with inadequate size to maintain the nuclear fusion that creates vibrant power in typical movie stars, thought to have formed with sufficient mass to start atomic fusion with its core, but without sufficient for fusion in order to become self-sustaining.
    • A starlike item that contracts to about the volume of the planet Jupiter after its development period; its mass may start around repeatedly that of Jupiter, such that it fuses deuterium, up to just beneath the limit of suffered hydrogen fusion.

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