Question About Dark Energy

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Discussion Overview

The discussion revolves around the nature of matter ejected during an explosion and its implications for the expansion and acceleration of the universe, exploring concepts related to dark energy and cosmology.

Discussion Character

  • Debate/contested

Main Points Raised

  • One participant suggests that matter from an explosion continues to accelerate indefinitely in a vacuum, proposing a link to the universe's ongoing expansion and acceleration.
  • Another participant counters that the velocity of matter from an explosion does not increase indefinitely, noting that it is determined by the temperature of the matter involved.
  • A third participant questions the source of the force that would cause continued acceleration of matter after an explosion.
  • A later reply asserts that the Big Bang was not an explosion into pre-existing space, implying a different understanding of cosmic expansion.

Areas of Agreement / Disagreement

Participants express differing views on the nature of matter's acceleration post-explosion and its relevance to cosmic expansion, indicating that multiple competing perspectives remain without consensus.

Contextual Notes

Assumptions about the nature of forces acting on matter and the definitions of terms like "explosion" and "acceleration" are not fully clarified, leaving some aspects of the discussion unresolved.

zuz
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When there is an explosion, matter flies off in every direction. At first it is static, and then it accelerates, and keeps accelerating, until friction slows it down to a stop. In a vacuum would this matter continue to accelerate indefinitely? And could this be the cause of the continued expansion and acceleration of the universe?
 
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  • Skeptical
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During an explosion, matter is accelerated outwards. The velocity does not continue to increase forever. The expansion following an explosion has a radial velocity determined by the temperature of the matter.
 
zuz said:
At first it is static, and then it accelerates, and keeps accelerating,
And where do you suppose the force comes from for this continuing acceleration???
 
zuz said:
could this be the cause of the continued expansion and acceleration of the universe?
No. The Big Bang was not an explosion into a pre-existing space.
 

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