What is Something Scientific that you just don't believe in at all?
EDIT: Let's cool it with the downvotes, dudes. We're not out to cut funding to your black hole detection chamber or revoke the degrees of chiropractors just because a couple of us don't believe in it, okay? Chill out, participate with the prompt and continue with having a nice day. I'm sure almost everybody has something to add.
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The Big Bang Theory, ... and this despite the fact that I believe the universe is expanding now. This expansion is still accelerating so the small acceleration itself could result in the expansion (speed distribution) without having to postulate an extremely rapid acceleration at time zero and other ludicrous extreme physical conditions.
... and yes I know also about the cosmological microwave background's perfect black body curve and such observations.
Is there a competing theory you find more compelling? "I don't know what happened" is fine, but if there's something else I haven't heard of that could explain the facts as we know them I'm interested in learning about it.
Some interesting developments here :
https://en.m.wikipedia.org/wiki/Modified_Newtonian_dynamics#Relativistic
... still not really satisfying for me.
(this is for @FooBarrington as well)
Cosmic Inflation is a good one to read up on if you never have. Because the slow acceleration we observe right now in the expansion is actually vastly inadequate to explain what we see now, so the big bang theory currently involves spacetime itself having to go through a few phase changes that are hard to wrap your head around.
Oh, nooow I see why people just say it was god.
How do you explain the CMBR?
I believe one of the theories for a multiverse is that Inflation never ended, it is just a continually ongoing process in which out universe "bubbled" out of it. Other universes would have bubbled up too, and we "should" be able to see evidence of collisions between those other bubbles and our own bubble in the CMB, which there has been a little bit of success in finding.
They problem is that the universe is bigger than the speed of light allowed for. One thing I have seen on YouTube from HistoryoftheUniverse is that inflation was possible because it was the inflation of the universe itself which would not be inherently restricted to the cosmic speed limit (C)