Undergrad Paradox: How can we look back at the Big Bang?

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SUMMARY

The discussion centers on the paradox of observing light from the Big Bang through the James Webb Space Telescope (JWST) and the implications of cosmic inflation and expansion. Participants clarify that the Big Bang was not an explosion but a universal event that occurred everywhere, allowing light from that epoch to reach us today. The conversation highlights the distinction between recession velocity and relative velocity, emphasizing that some galaxies are receding faster than light due to the expansion of space itself. The discussion concludes that while inflation is a widely accepted theory, it remains unfalsifiable with current technology, leading to debates about its validity and implications for cosmology.

PREREQUISITES
  • Understanding of cosmic inflation and expansion theories
  • Familiarity with the concepts of recession velocity and relative velocity in cosmology
  • Knowledge of the Cosmic Microwave Background (CMB) and its significance
  • Basic principles of General Relativity and spacetime dynamics
NEXT STEPS
  • Research the James Webb Space Telescope's capabilities and its contributions to cosmology
  • Study the observational status of cosmic inflation and its experimental verifications
  • Explore the implications of recession velocity in the context of General Relativity
  • Investigate the Cosmic Microwave Background and its role in understanding the early universe
USEFUL FOR

Astronomers, cosmologists, physics students, and anyone interested in the fundamental questions of the universe's origins and the nature of cosmic expansion.

  • #31
Vanadium 50 said:
These theories are supersymmetric, and we've already found half the particles!
🤦‍♂️
 
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  • #32
Vanadium 50 said:
These theories are supersymmetric, and we've already found half the particles!
I only know bosonic string theory :(
 
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