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Phrak is offline
Jan24-10, 05:26 PM
P: 4,513
Quote Quote by JesseM View Post
Do you think it's delusional to think general relativity is probably correct at far lower energy densities than the Planck scale, and thus that its theoretical predictions about collapsing stars becoming black holes are very likely to be correct too? Or do you think that, even given the assumption that GR is correct on a theoretical level, it's delusional to think that various astronomical objects which appear to fit the profile for what GR would predict about black holes (like this one, which does have what seems to be an accretion disc and jets in photos...likewise, see here and here for photos of a jet from the center of M87 which is believed to contain a supermassive black hole) are in fact black holes?
How long does it take for a black hole to form? How long does it take for its mass to increase? What is the age of the universe? What is the theoretical justification for claiming accreation disks, jets, and other evidence of black holes are not also evidence of pre-collapsed dense masses?