Black holes are commonly accepted to be real, but what if they are not? What are alternatives to black holes? And what problems are those alternative theories trying to solve?

My video on why we think black holes exist
• Why are we so sure black holes exist?…
My video on information loss paradox
• The biggest paradox of black holes

Sources
Black hole formation
https://arxiv.org/ftp/arxiv/papers/16…
https://mcdonaldobservatory.org/news/…
Semiclassical gravity
https://phys.org/news/2013-05-semicla…
Alternatives
https://skyandtelescope.org/astronomy…
https://www.science.org/doi/10.1126/s…
https://cds.cern.ch/record/2663096/fi…
Black star

Click to access 0712.1130.pdf

https://physics.ucf.edu/~britt/AST200…
Dark Energy
https://science.nasa.gov/astrophysics…
https://earthsky.org/space/definition…
Dark-energy star
https://arxiv.org/ftp/astro-ph/papers…
https://www.nature.com/articles/news0…
https://nautil.us/blog/are-black-hole…
https://www.sciencedirect.com/science…
https://www.slac.stanford.edu/econf/C…

Click to access 2103.15393.pdf

Gravastar
https://www.worldscientific.com/doi/a…
https://arxiv.org/abs/2010.05354
https://arxiv.org/abs/0706.1513
https://futurism.com/the-gravastar-an…
https://www.scientificamerican.com/ar…
Planck star

Click to access 1401.6562.pdf

https://interestingengineering.com/a-…
https://futurism.com/what-are-planck-…
https://phys.org/news/2014-02-astroph…
https://astronomy.swin.edu.au/cosmos/…
Fuzzballs
https://www.quantamagazine.org/how-fu…
https://www.livescience.com/string-th…
Q-star (Grey hole)
https://arxiv.org/pdf/astro-ph/970806…
https://arxiv.org/pdf/astro-ph/020727…
Boson stars
https://www.sciencealert.com/there-co…

[…]