What's true about the beginning of the universe?
9
125á¹€1703000
41%
The beginning is fundamentally unknowable with any current and future observations.
27%
The universe arises out of quantum tunneling from ‘nothing’, and the process can be described by a Lorentzian path integral (e.g., Vilenkin's proposal).
26%
The universe is eternal and has no beginning.
26%
There is change in spacetime signature (e.g., Hartle-Hawking proposal of Euclidean to Lorentzian signature)
13%
The observable universe budded off as a baby universe from a black hole.
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