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curious222
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- do physicists and cosmologists really know how the universe will die?could there be a new Big Bang?
do physicists and cosmologists really know how the universe will die?could there be a new Big Bang?
Yes universe is expanding.new big bang after heat death?berkeman said:Thread prefix changed from "A" = Advanced graduate school level to "I" = Intermediate undergraduate level.
@curious222 -- Have you done any reading about Dark Energy and the measurements behind that advancement in our models of the Universe?
Why? How?curious222 said:Yes universe is expanding.new big bang after heat death?
What existed before the big bang?phinds said:Why? How?
Nobody knows, as we've said to you before.curious222 said:What existed before the big bang?
I see that you keep getting threads closed because you REFUSE to accept the answer you've been told several times. WE DON'T KNOW.curious222 said:What existed before the big bang?
It's even worse. We cannot know. We cannot even pose the question! @curious222's "before" means ##T<0##, but ##T## is only defined in the range ##T>0##. There was no time prior to time!phinds said:I see that you keep getting threads closed because you REFUSE to accept the answer you've been told several times. WE DON'T KNOW.
Question is answered and this thread is closed.Ibix said:Nobody knows, as we've said to you before.
This is a question that has puzzled scientists and philosophers for centuries. The ultimate fate of the Universe is a complex and ongoing topic of research, but here are some frequently asked questions and their answers.
Current evidence suggests that the Universe will continue to expand forever. This is due to the discovery of dark energy, which is causing the expansion of the Universe to accelerate. However, there is still ongoing research and debate about this topic.
Dark matter is a mysterious substance that makes up about 27% of the Universe. It is believed to play a major role in the fate of the Universe, as it is responsible for holding galaxies together and influencing the rate of expansion. However, its exact role is still not fully understood.
The theory of the "Big Crunch" suggests that the Universe will eventually stop expanding and start collapsing in on itself. However, recent observations and data have shown that the expansion of the Universe is actually accelerating, making the possibility of a "Big Crunch" less likely.
The "Big Rip" is a hypothetical scenario where the expansion of the Universe becomes so rapid that it tears apart all matter, including atoms and even subatomic particles. This is currently considered a less likely outcome, but it is still a topic of ongoing research and debate.
Some theories suggest that the Universe may go through cycles of expansion and contraction, with a "Big Bang" followed by a "Big Crunch" and then another "Big Bang". However, there is currently no concrete evidence to support this idea, and it remains a topic of speculation and further research.