All Questions
5
questions
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Early Universe Flatness Problem
My question is about the curvature of spacetime in the early universe (Plank era)
https://en.wikipedia.org/wiki/Flatness_problem
Based on data from Wilkinson Microwave Anisotropy Probe, in order to ...
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1
vote
1
answer
281
views
Curvature in space time during Big Bang and present scenario
Space time in the presence of masses is curved. But during the time of Big Bang it's presumed that all the matter in this universe was at a single point, so it must have been super dense and had very ...
1
vote
5
answers
301
views
Why is the universe expanding yet remaining flat?
According to The Big Bang Theory everything started from nothing and suddenly started expanding creating everything that is. So why is it only expanding on an X&Y axis? I can only find facts that ...
0
votes
0
answers
71
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Is the Big Bang notion compatible with the flat space? (A problem with the **moment** of Big Bang, not with the place of it) [duplicate]
A passage from a paper:
"If one imagines running the clock backward in time, any
given region of the universe shrinks and all galaxies in it get
closer and closer until they smash together in a ...
user65852
5
votes
1
answer
340
views
Open Big Bang-less universe?
This came up in discussion around a class I'm taking. For a Universe with $\Lambda$ and matter contributions to energy density (and implicitly curvature, but no radiation), can you have a universe ...
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