AI Insight
Astronomers have identified chemical composition differences between two stars in a binary system, with one star showing elemental signatures consistent with having consumed planetary material. The analysis reveals anomalies in the abundance of certain elements that are typically enriched in rocky planets compared to stars, suggesting at least one exoplanet was engulfed by its host star. This discovery was made possible by comparing the nearly identical twin stars, which should have formed with the same chemical composition.
Why it matters
This finding provides direct evidence that stars can consume their own planets, a process previously theorized but difficult to confirm observationally. Understanding planetary engulfment helps astronomers better predict the long-term evolution of planetary systems and explains certain chemical peculiarities observed in some stars.
Astronomers have discovered chemical differences between binary stars that indicate one has devoured at least one planet.
Source: One of these twin stars has likely been snacking on exoplanets