Mass loss in red giant stars is one of the major uncertainties in the astrophysics. Red giant stars. Image credit: NASA’s Goddard Space Flight Center / Chris Smith, KBRwyle. Red giants are evolved stars that have burned all the hydrogen in their cores into helium through a process of nuclear fusion and instead burn hydrogen in a shell. Towards the ends of their lives, these stars also start burning the helium in their cores. There are millions of...
