• Question: Is there any other planets that are bigger than the sun?

    Asked by anon-226293 to Sameed, Jose, joannabarstow, Heidi, Freya, Chris on 16 Nov 2019.
    • Photo: Heidi

      Heidi answered on 16 Nov 2019:


      Nope! The biggest exoplanet we know of is HAT-P-67 b, a gas giant about twice the diameter of Jupiter. The reason we don’t see exoplanets larger than the Sun is that if a gas giant gets too large, the pressure gets so large that nuclear fusion can happen, forming a star!

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