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Science

Are ‘mega-Earths’ real? Stellar activity may explain these oversized rocky worlds

October 22, 2026 · 1:50 pm 1 sources

Image: Phys.org

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  • Are 'mega-Earths' real? Stellar activity may explain these oversized rocky worlds
    Phys.org · October 22, 2026 13:50
    A new study suggests that some of the heaviest rocky planets ever reported may not be as heavy as they look. These so-called 'mega-Earths,' rocky planets weighing more than about 10 Earths, could be an illusion created by activity on their host stars. The paper was posted to the arXiv preprint…

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