The study, focusing on 91 twin star pairs, reveals that some may have absorbed planets, an event possibly triggered by orbital disruptions.
The research, as Reuters reports, highlights the uniqueness of planetary stability, unlike the constant orbit of Earth and its solar companions for 4.5 billion years. These twin stars, born from the same cosmic clouds and sharing similar properties, travel parallel paths in the Milky Way without forming gravitational pairs.
Researchers pinpointed stars with elevated levels of elements indicative of rocky planets, such as iron, nickel, and titanium, suggesting a planet’s incorporation might change a star’s composition. “
The study points out the elemental abundance differences between two co-natal stars,” stated Fan Liu from Monash University, Australia, the study’s lead, in a paper published in Nature Journal.
In seven pairs, evidence suggested one star had consumed a planet, likely due to disturbances from larger planets or proximate stars destabilizing the system. Yuan-Sen Ting, an astrophysicist and study co-author from the Australian National University and Ohio State University, mused on our solar system’s exceptional stability, a rarity not guaranteed across the cosmos.
