The Sun May Have Swallowed a Planet

The Sun may have swallowed a planet during its formation, as new research suggests that the unusual characteristics of the Sun—such as its lithium-poor surface and the speed of sound in its convection zone—could be explained by the presence of an engulfed planet. The study, conducted by Professor Mutlu Yildiz, models the Sun's evolution and shows that a buried super-Earth could account for the observed discrepancies in the Sun's internal structure and lithium abundance. The model suggests a planet about 5.6 times the size of Earth, which is rocky and lithium-poor, could be the cause of the anomalies.

• The Sun's surface is lithium-poor, with significantly less lithium than expected from its formation.
• The speed of sound in the Sun's convection zone does not match standard models, raising questions about its internal structure.
• The study proposes that a buried planet could explain these anomalies, potentially by stirring up the Sun's interior.
• While the paper does not prove the existence of such a planet, it highlights that the Sun's characteristics could be consistent with the presence of an engulfed planet.
• The research is hopeful that future observations could reveal the presence of the planet and provide evidence of the Sun's history.

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