Gaia-5b is a brown dwarf orbiting the Gaia-5 star, around 134 light-years away from Earth. With a mass of around 21 Jupiters, Gaia-5b is more massive than a planet but too light to sustain nuclear fusion to be a star. This animation visualises a portion of the orbital motion as determined by Gaia’s astrometric data. The star and planet are not to scale.

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