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    ‘Super-puff’ planets lighter than candy floss discovered by international team

    June 26, 2026, Categories  Astronomy/Space

    'Super-puff' planets lighter than candy floss discovered by international team
    This illustration depicts the sun-like star TOI-791 and two giant planets that NASA’s TESS space telescope discovered in its orbit. These planets, designated TOI-791 b and TOI-791 c, are roughly the size of Jupiter but a tiny fraction of its mass, meaning they have an extraordinarily low density. Credit: NASA/Daniel Rutter.

    An international collaboration has discovered two of the lowest-density giant planets ever detected: rare “super-puff” planets with densities lower than candy floss. The study—led by the University of Oxford, in collaboration with Université Côte d’Azur/Observatoire de la Côte d’Azur and the University of Birmingham—has been published in Monthly Notices of the Royal Astronomical Society.

    The two planets, named TOI-791 b and TOI-791 c, orbit an F7-type dwar...

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