B Question About Dark Energy

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In discussions about dark energy, it's noted that matter from an explosion initially accelerates but does not continue to do so indefinitely. The expansion of matter is influenced by its temperature, leading to a radial velocity that stabilizes over time. The idea that this acceleration could explain the universe's ongoing expansion is challenged, as the Big Bang is not considered an explosion into pre-existing space. The source of continuous acceleration remains a key question in cosmology. Understanding these dynamics is crucial for comprehending the universe's expansion.
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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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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