AA << predict [the Sun] will turn into a massive ring of luminous, interstellar gas and dust, known as a planetary nebula >>
<< This is a nice result. Not only do we now have a way to measure the presence of stars of ages a few billion years in distant galaxies, which is a range that is remarkably difficult to measure, we even have found out what the sun will do when it dies! >> Albert Zijlstra
University of Manchester. What will happen when our sun dies? May 7, 2018.
K. Gesicki, A. A. Zijlstra & M. M. Miller Bertolami. The mysterious age invariance of the planetary nebula luminosity function bright cut-off. Nature Astronomy. doi: 10.1038/s41550-018-0453-9. May 07, 2018.