Big Bang: Spacetime Created in 1 Sec

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SUMMARY

During the first second of the Big Bang, spacetime was created, and the rapid expansion of the universe led to significant phenomena that can only be measured in Planck time. The discussion highlights the relationship between space dilation and time dilation, suggesting that if one were to observe the Big Bang from within, the perception of time could vastly differ, potentially experiencing what appears to be millennia in just one second. This concept is rooted in the principles of cosmological models that utilize clocks of co-moving observers to measure time in a homogeneous and isotropic universe.

PREREQUISITES
  • Understanding of Big Bang cosmology
  • Familiarity with Planck time measurement
  • Knowledge of spacetime concepts in physics
  • Basic grasp of cosmological models and observer frames
NEXT STEPS
  • Research the implications of spacetime creation during the Big Bang
  • Explore the concept of time dilation in expanding universes
  • Study the role of Planck time in quantum gravity theories
  • Investigate how co-moving observers measure time in cosmology
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Astronomers, physicists, cosmologists, and anyone interested in the fundamental concepts of the universe's origin and the nature of time and space.

TerryHM
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During the first second of the Big Bang a mind boggling amount happened. So much so that we need to measure it in plank time to appreciate all the stages that occur. And in that 'bang' spacetime was created.

My question is this. As space dilated would time not dilate? Meaning. If I were able to be inside the Big Bang as it happens, in that first second, time would speed up as the universe expanded.

Would this not result in me observing that first second as millennia?
 
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Time in our universe and cosmological models is measured by looking at the clocks of co-moving observers in whose frames the universe is homogeneous and isotropic. If you were a different observer, you could have a longer (or shorter) time passing in your clock.
 

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