https://www.bibliotecapleyades.net/universo/cosmos581.htm
What's the Most Massive Star in the Universe?
most massive staruniverse
https://eso.org/public/ireland/news/eso2118/?lang
ESO telescope images planet around most massive star pair to date | ESO Ireland
most massive star
https://www.livescience.com/most-massive-neutron-star-discovered.html
Universe's Most Massive Neutron Star Spotted. Should It Even Exist? | Live Science
Sep 18, 2019 - The neutron star is so massive that it's near the limit of being able to exist at all.