Redshift & Far Distant Stars: Effects on Temperature

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SUMMARY

The discussion centers on the implications of redshift in relation to the temperature of distant stars and its connection to Olber's Paradox. Participants agree that redshift leads to a decrease in heat from far distant stars, suggesting a lower equilibrium temperature than that of average stars. This reasoning supports the Big Bang theory and the concept of an expanding universe, contrasting with the static universe model that Olber's Paradox challenges. The conversation highlights that a static universe would not exhibit the observed redshift, reinforcing the evidence for cosmic expansion.

PREREQUISITES
  • Understanding of redshift and its implications in astrophysics
  • Familiarity with Olber's Paradox and its significance in cosmology
  • Knowledge of the Cosmic Microwave Background (CMB) and its role in supporting the Big Bang theory
  • Basic concepts of the expanding universe model versus the steady state universe model
NEXT STEPS
  • Research the implications of redshift on stellar temperatures in astrophysics
  • Explore the details of Olber's Paradox and its historical context in cosmology
  • Study the Cosmic Microwave Background (CMB) and its significance in the Big Bang theory
  • Investigate the differences between the expanding universe model and the steady state universe model
USEFUL FOR

Astronomers, astrophysicists, cosmologists, and anyone interested in the fundamental principles of the universe's structure and evolution.

samsara15
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Wouldn't the Redshift result in decreased heat from far distant stars, resulting in an equilibirum temperature, much lower than the average star?
 
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Yes. That logic led to the discovery of the CMB...though it isn't stars that is seen in the CMB, but the surface of last scattering.

Doesn't help much with Obler's paradox though.
 
Actually it does help.
Obler's paradox refers to a night sky that would be illuminated if the universe was static and infinite, in contrast with what we do see, a black night sky. A static universe would not have the observed Redshift ( capitalized as in the question ), so a black might sky is used as evidence in support of the big bang theory, expanding universe, along with the CMB and its redshift.
 
samsara15 said:
Wouldn't the Redshift result in decreased heat from far distant stars, resulting in an equilibirum temperature, much lower than the average star?

The Olber Paradox doesn't refer to a Universe where red shift is relevant -in any case, to deal with your red shift point, in a stead state Universe, surely there would be as many stars approaching us as receding.

The Olber paradox has done its job, you could say, in that it has shown that a steady state, infinite Universe would not appear like our Universe does.
 

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