Universal Expansion: Is All Matter Expanding?

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SUMMARY

The forum discussion centers on the concept of Universal Expansion, specifically the metric expansion of space and its implications for matter. Participants debate whether all matter is expanding alongside space, with references to the effects of gravity on local bodies and the behavior of distant galaxies. Key points include the assertion that while galaxies are moving away from us, local gravitational effects prevent smaller scale expansion, and the discussion touches on the implications for historical planetary conditions, such as the size of Earth and the flight capabilities of dinosaurs.

PREREQUISITES
  • Understanding of metric expansion of space
  • Familiarity with gravitational effects on spacetime
  • Knowledge of redshift and its implications in astrophysics
  • Basic grasp of Pauli's exclusion principle and its relevance to particle physics
NEXT STEPS
  • Research the implications of metric expansion on cosmic structures
  • Explore the relationship between gravity and redshift in astrophysical contexts
  • Study the effects of cosmic inflation on the early universe
  • Investigate the role of dark energy in the expansion of the universe
USEFUL FOR

Astronomers, physicists, and students of cosmology interested in the dynamics of Universal Expansion and its effects on matter and gravity.

  • #31
Landrew said:
I'm not assuming or asserting anything. I'm just asking questions. If you don't have the answers, insulting won't make you smarter.
No insult intended. You are assuming universal expansion is - universal. It is not. It only applies when other forces [e.g., gravity] are too weak to resist.
 

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