Research Reveals How Aging Stars Destroy Nearby Planets
Research Reveals How Aging Stars Destroy Nearby Planets
Recent research from University College London and the University of Warwick confirms that aging stars are cosmic planet eaters.
As stars similar to our Sun exhaust their hydrogen fuel, they transition into a "red giant" phase, expanding significantly.
This process triggers "stellar engulfment," a phenomenon where gravitational tidal interactions pull nearby planets inward.
Analyzing nearly half a million stars through NASA’s TESS mission, researchers found that close-orbit giant planets are exceptionally rare around evolved stars.
While our own Sun will likely consume Mercury and Venus in about 5 billion years, not all planets are doomed; some may survive if their host star's evolutionary path is altered, such as through stellar mergers.
Understanding this "post-main sequence" evolution helps astronomers map the long-term fate of planetary systems, providing a window into the distant future of our own solar neighborhood.
