I don't know whether to laugh or cringe. Because I go to flat earth sites, my entire Google feed is full of this stuff every day. It's hysterical, I get a kick out of their cartoons. But this one is beyond comprehension, how people are working in universities coming up with some theory (making up a fantasy) and then detailing exactly how it works. And people just gobble this stuff up, lost in the possibilities of gravastars and quasars and black holes and Hollywood movies, then you pull their mind back down to the flat earth and show them that we are not even allowed to explore our own land here such as Antarctica, and they call you a conspiracy theorist. I'm going to start referring to them as theoretical theoriests. Lol.
https://aktuelles.uni-frankfurt.de/english/a-star-like-a-matryoshka-doll-new-theory-for-gravastars/
When they show humanity an actual video of the earth from some point beyond the m00n, then I will consider there may be merit to their heliocentric religion. I mean, we have high res "photos" of nebulas and galaxies 567 guzillion light years beyond the earth, so this should be easy as pie for the luciferians at NotASpaceAgency.
Everything in "outer space" science is theory and reasoning and can never be qualified with actual, verifiable results.