Accelerating Universe, Relativistic Mass and Dark Energy

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SUMMARY

The discussion centers on the acceleration of the universe and its implications on relativistic mass and dark energy. The user references Lorentz's Factor, stating that as the universe expands, its mass increases, which could eventually halt the acceleration due to increased gravitational forces. Additionally, the user posits that dark energy transforms potential energy into kinetic energy, potentially leading to a "big crunch" if dark energy ceases to exist. A key correction provided in the discussion clarifies the misuse of the Lorentz equation, emphasizing that the universe does not have a relative velocity as it encompasses all existence.

PREREQUISITES
  • Understanding of Lorentz's Factor in special relativity
  • Knowledge of dark energy and its role in cosmic expansion
  • Familiarity with concepts of relativistic mass and gravitational forces
  • Basic principles of cosmology and the fate of the universe
NEXT STEPS
  • Research the implications of Lorentz's Factor on cosmic expansion
  • Study the nature and properties of dark energy
  • Explore the concept of relativistic mass in the context of general relativity
  • Investigate theories regarding the ultimate fate of the universe, including the big crunch
USEFUL FOR

Astronomers, physicists, students of cosmology, and anyone interested in the dynamics of the universe's expansion and the role of dark energy.

oXDawidXo
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Hi!

Well, I have a problem, I'm writing Extended Project For Applied Science about Death of the Universe, I am stuck. I am really desperate so I decided to put it on forum.
First:
The Universe is accelerating so, according to Lorentz's Factor, its mass should be increasing

<br /> m = \gamma m_{0} = \frac {m_{0}} { \sqrt{1-v^{2}/c^{2}} }<br />

gamma-300x198.jpg


Because this graph is an asymptote, the mass of expanding universe starts to go up rapidly after about 0.95c (95% of the light's speed). Mass increases gravity forces between galaxies. The universe cannot expand faster than light, so I suppose as the universe continues expanding the mass eventually will reach a point where the relativistic mass creates so big gravity force that it will stop the universe from accelerating. Will the expansion slow down, will it just keep expanding with constant speed or what?

Second:

Dark energy is a form of potential energy which causes the accelerating universe, so the potential energy must be turning into kinetic one, so eventually all potential energy will be turned to the kinetic one and if there is no source in dark energy the gravity will be dominant force in the universe and that leads to big crunch, doesn't it?

The thing is that I can't find neither any resources to prove those theories nor any mistakes in them myself.

Any comments are welcome ;D

PS I'm sorry for errors, I'm not English
 
Last edited:
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oXDawidXo said:
The Universe is accelerating so, according to Lorentz's Factor, its mass should be increasing

You are misusing that equation. The v is the relative velocity bewteen two frames. The universe as a whole is not moving relative to something else - because by definition the universe is all that there is.
 
Thanks, that helped a lot ;D
 

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