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0 votes
0 answers
66 views

No symmetries in the universe at the Big Bang...?

I apologize in advance if this is a stupid question but... According to some scenarios about the beginning of the universe (namely cosmological inflation), in layman terms, everything was born out of ...
vengaq's user avatar
  • 2,462
6 votes
2 answers
317 views

What exactly is the problem that Inflation solves?

There's copious documents about how Inflation solves the problem that General Relativity predicts a lumpy CMB. That influation 'smooths' out the curvature fluctuations and, so, predicts a CMB at ...
user avatar
0 votes
0 answers
61 views

What is the relationship between the Cosmological Constant and the Cosmological Principle?

I believe I've misunderstood a relationship between the cosmological constant and the cosmological principle having read: Einstein introduces his cosmological constant which attributes, in the ...
user2752347's user avatar
1 vote
3 answers
272 views

Is there a contradiction between isotropy and the Big Bang? [duplicate]

Disclaimer: I'm not asking whether the Big Bang happened at a point. I'm asking whether the fact that the universe is isotropic and that the Big Bang happened contradict each other. To be honest I am ...
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0 votes
0 answers
36 views

How can the universe be homogeneous and isotropic while it has started with a big bang? [duplicate]

We assume the universe has been shaped by a explosion "Big Bang" but from what I understand explosions make the environment "not" homogeneous and "not" isotropic. If that's right how can we assume the ...
Alireza's user avatar
  • 474
5 votes
2 answers
3k views

Why isn't our universe symmetric?

Why were random variations introduced in the spherically symmetric universe after Big Bang which made it non-symmetrical. Since the outcome of a coin toss depend on factors such as torque applied, air ...
jaskaran's user avatar
  • 297
1 vote
2 answers
179 views

Could the universe have evolved WITHOUT the non-determinism of quantum mechanics? [closed]

(I'm going to make a few conjectures here - please answer the question in light of them as if they were true, even though of course they may be overly simplistic or wrong) Assuming that: the ...
bagel's user avatar
  • 11