Solar system stability and planetary formation theories challenged by new research

New astrophysical research suggests the solar system may face significant instability. A study led by Konstantin Batygin of the California Institute of Technology, published in The Astrophysical Journal Letters, indicates that the transition of the Sun into a white dwarf could trigger a “dynamical instability.” Using supercomputer models, researchers suggest that the Sun’s death throes may involve “stochastic kicks” of mass ejection that disrupt planetary orbits, potentially leading to a “violent scattering” that could destroy even distant gas giants within a billion years of the Sun's collapse.

Separately, research from the University of Copenhagen suggests that Earth and Mars followed fundamentally different formation paths despite developing in the same solar system. By analyzing volatile elements like sodium, zinc, and potassium, scientists found that at least 75 percent of Earth’s mass originated from protoplanets that grew via pebble accretion. In contrast, approximately three-quarters of Mars’ mass was formed through collisions with larger bodies known as planetesimals.