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So, if a universe is big enough for black holes, it might have black holes in it, but if it isn't, it's just a regular-old stars and planets universe. And then, any black hole it might have has a reduced universe inside it.
Extraordinary claims require extraordinary evidence. Also what happens to this "universe" when the black hole dissipates due to Hawkins Radiation?
Extraordinary claims require extraordinary evidence. Also what happens to this "universe" when the black hole dissipates due to Hawkins Radiation?
Also, any matter falling into a black hole should appear in the other universe. It would be an interesting to have new mass/energy appearing in our universe.
Is this not a Turtles all the way down theory. We are in a Black hole which is inside a Black Hole? A well-known scientist (some say it was Bertrand Russell) once gave a public lecture on astronomy. He described how the earth orbits around the sun and how the sun, in turn, orbits around the center of a vast collection of stars called our galaxy. At the end of the lecture, a little old lady at the back of the room got…
I don't think there is anything inherently wrong with a Turtles all the way down theory, as long as it is supported by facts.
Lee Smolin made an ingenious observation: if that's so, and if it happens that in the "daughter" universe the constants of nature are slightly (and variably) different from those in the "parent", then we have exactly the setup required for Darwinian evolution, and we should expect universes to be selected for black hole fecundity. (And if that's correlated with, e.g., the viability of stars, then perhaps it explains "fine tuning", in so far as that actually exists.) Smolin wrote a book about this, called "The life of the cosmos", but I haven't read it so can't recommend or disrecommend it.
If this is true, is the LHC creating universes?
It is worth noting that the estimated mass of the universe is the same as the mass of a black hole whose event horizon has the radius of the visible universe. This coincidence is rather striking and has been the subject of much speculation, though nobody has been able to make anything useful come out of it. If this theory manages to predict this relation within the created universe, that would be evidence for the the…
Also note that if there are universes inside black-holes in our own universe, they have much less mass to play with.
The best this theory (that, unless it can be tested, may not deserve to be called one) has going for it is that the math is right. And since I haven't seen it, I can't say that either.
National Geographic is not the best source for news in Physics or Cosmology.