Toward the end of their lives, low-mass stars undergo an abrupt dip in brightness, also known as the luminosity bump. While the endpoint of this bump is well understood, its onset has remained elusive. Now, in a paper published by The Astrophysical Journal Letters, Saskia Hekker, leader of the ...
Source: [Phys.org](https://phys.org/news/2026-09-discontinuity-disorder-luminosity-evolved-stars.html)