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NextFeynman
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Seeing as energy is conserved throughout the universe, did all the energy of the universe begin at the same time as our universe?
NextFeynman said:So, would it be safe to assume that the universe is gaining energy as it expands or would it be impossible to tell
mathman said:Ordinary matter, dark matter, and ordinary energy are conserved, although interchangeable. Dark energy is increasing with the expansion of the universe.
Note: this is my understanding - I could be wrong.
Drakkith said:I believe light loses energy over time due to redshift from expansion.
phinds said:Yeah, it's been making me a little tired too.
Drakkith said:Have you been expanding recently Phinds?
phinds said:Absolutely, and with Thanksgiving on a couple days away I fear further expansion.
Drakkith said:Have some turkey for me, as I fear I will not have the opportunity to enjoy any.
NextFeynman said:Michio says that the strings of M-Theory vibrate throughout 11 dimensional hyperspace, he also says that the dimensions are curled up so tiny we can't see them, so when our universe first started, by whatever means, 3 of the ten spatial dimensions "popped" out while the other 7 stayed tucked away, and if the universe is getting larger through dark energy couldn't dark energy be the strings blowing up three dimensions of the ten that are tucked into them?
Unfortunately, Dr. Kaku frequently speaks of M-theory as if it were Newtons theory of gravity - well accepted and revered by mainstream science. It is not. But, he does create this impression with lay people via this questionable tactic.NextFeynman said:Michio says that the strings of M-Theory vibrate throughout 11 dimensional hyperspace, he also says that the dimensions are curled up so tiny we can't see them, so when our universe first started, by whatever means, 3 of the ten spatial dimensions "popped" out while the other 7 stayed tucked away, and if the universe is getting larger through dark energy couldn't dark energy be the strings blowing up three dimensions of the ten that are tucked into them?
NextFeynman said:Sorry for the speculation, just wondering if It could be plausible.
It's incredibly unlikely. Pure speculation with nothing approaching a realistic model, and some good reasons to expect it's impossible.phinds said:Yes, so much so that I have heard one theory, I think posted here on this forum, that the universe moves towards a singularity of infinite energy density because of the exponential overall increase in dark energy. I have no idea how solid that theory is.
Chalnoth said:It's incredibly unlikely. Pure speculation with nothing approaching a realistic model, and some good reasons to expect it's impossible.
Energy isn't conserved in General Relativity. Here's a good, detailed look if you're interested:NextFeynman said:Seeing as energy is conserved throughout the universe, did all the energy of the universe begin at the same time as our universe?
Early on, shortly after inflation ended, dark energy was a minuscule fraction of the total energy (inflation itself acted much like a different sort of dark energy, with much higher density).NextFeynman said:At the beginning of our universe, could the total energy of the universe be greater than or equal to the dark energy at that time?
The same amount? No. Dark energy doesn't spread out: it always remains at approximately the same energy density. So as dark energy fills more space, the total energy increases (at least considering the way it's usually looked at).NextFeynman said:So could dark energy be the same amount of energy since the start of the universe, and its just spreading more space out ever since then.
NextFeynman said:Could dark energy be expanding the universe at the same rate over the entire existence of the universe
NextFeynman said:How do we know that dark energy hasn't been expanding the universe at the same rate? If dark energy has been expanding space since the beginning it is going to have more and more space to create. So couldn't dark energy be the creation of the three dimensional space we observe?
Drakkith said:I believe light loses energy over time due to redshift from expansion.
Nope. See my first post in this thread.ImaLooser said:I thought that total energy was conserved. Energy density of radiation decreases because the volume of the universe increases. Energy density times volume is a constant, as far as I know in a finite Universe. In an infinite Universe then energy density divided by matter density would be a constant.
Universal energy refers to the energy that is present throughout the entire universe and is believed to be the source of all life and creation. It is also known as cosmic energy, life force, or prana in different cultures and belief systems.
There are various ways to tap into the power of universal energy, such as through meditation, mindfulness practices, connecting with nature, and aligning our thoughts and actions with positive intentions. It is also important to have an open and receptive mindset to allow the flow of universal energy.
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While there is no direct scientific evidence for the existence of universal energy, many scientific theories and studies support the concept. For example, quantum physics suggests that everything in the universe is made up of energy, and the law of conservation of energy states that energy cannot be created or destroyed, only transformed.
Yes, anyone can access the power of universal energy as it is present in all living beings and the universe itself. However, it requires a willingness to learn and practice techniques to connect with this energy. It is also important to have a positive and open mindset to fully tap into its potential.