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https://www.nasa.gov/image-article/why-sun-wont-become-black-hole/
https://www.space.com/15421-black-holes-facts-formation-discovery-sdcmp.html
https://www.space.com/42949-sun-crystal-white-dwarf-stars-lifecycle.html
https://imagine.gsfc.nasa.gov/science/objects/neutron_stars1.html
https://www.space.com/22180-neutron-stars.html
https://www.nationalgeographic.com/science/article/black-holes
https://www.forbes.com/sites/startswithabang/2017/08/19/ask-ethan-do-black-holes-grow-faster-than-they-evaporate/?sh=722c504e52bc
https://vocal.media/fiction/exploring-the-phenomenon-of-black-hole-stars
https://medium.com/predict/quasi-stars-black-holes-at-the-core-of-the-universes-largest-stars-38bfbc4e1b95
https://www.universetoday.com/25669/the-sun-as-a-white-dwarf-star/
https://www.science.org/content/article/are-tiny-black-holes-hiding-within-giant-stars
https://www.iflscience.com/some-stars-may-have-tiny-black-holes-hiding-in-their-cores-72089
https://www.sciencealert.com/parasite-black-holes-could-be-eating-away-at-stars-from-the-inside
https://www.universetoday.com/15585/diameter-of-the-solar-system/
https://astrophotographylens.com/blogs/astro/uy-scuti-vs-stephenson-2-18-vs-quasi-star
https://www.popularmechanics.com/space/a14524087/black-holes-mass-energy/
https://astronomy.swin.edu.au/cosmos/d/dark+halo