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

Source: Phys.org ·
Full disk of Earth from space showing North America
File photo NASA · Public domain · Source

The Quick Take

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 server on Oct. 8.

Read the full story at Phys.org

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