Why does the universe has such a huge amount of Energy?

  • Thread starter Veovis
  • Start date
  • #1
5
0

Main Question or Discussion Point

Y accept the existence of the universe and the existence of effective energy within it, but, is there a reason because of the incalculable (hope the word exists) amount of that energy? I know that this question is more philosophical than physical... but maybe someone can give some sort of answer...
 
Last edited:

Answers and Replies

  • #2
Ivan Seeking
Staff Emeritus
Science Advisor
Gold Member
7,213
176
I was going to move this to an approriate forum, but I don't understand your question.
 
  • #3
5
0
Then erase it, maybe a stupid question, but I thought some could tell something about big-bang.
Why does exists millions of millions of millions of stars intead of just 1?
Maybe is definetly a stupid question, like Why is the universe so powerfull?... and,

Does the universe have a finite energy?

That is the most clear version of my question.
 
  • #4
609
0
Well think about it as "normalization". Our universe has as much energy as a universe is supposed to have. There is nothing to compare it to. Its like asking why there are so many blades of grass in a field. Its a huge number, but you really can't judge. You cannot compare a number to "1" and say whether it is large or not. Is 2 a large number of eyes? Is 6 billion a large number of people? etc.

Just because a number is "astronomical" does not mean it is extraordinary. The universe right now has exactly the amount of stars it COULD have had. No more, no less.
 
  • #5
Ivan Seeking
Staff Emeritus
Science Advisor
Gold Member
7,213
176
Then erase it, maybe a stupid question, but I thought some could tell something about big-bang.
No problem. I just didn't quite understand what you meant.
 
  • #6
5
0
You're right, but in all earth we can assume that the number of grass blades is finite... can we assume the same for the energy of the universe?
 
  • #7
1,490
22
Energy can not be created or destroyed, it can only be changed from one form to another, or passed from one body to another, but the total amount of energy remains constant.

So, even a little energy is infinite.
 
  • #8
It does seem like an interesting question in that I'd be interested in hearing speculation on what the result of the universe having more or less energy would be. It would effect cosmic inflation behavior at least, right?
⚛
 
  • #9
Ivan Seeking
Staff Emeritus
Science Advisor
Gold Member
7,213
176
You're right, but in all earth we can assume that the number of grass blades is finite... can we assume the same for the energy of the universe?
To the best of our knowledge, yes.
 
  • #10
mgb_phys
Science Advisor
Homework Helper
7,774
12
Why the universe contains this particular mass is a very good question.
There is no reason (that we know about) that the initial singularity couldn't create a universe of any mass.

It could simply be that there are (were/is/will-be - English cases don't really cope with multiple universes) many universes of different masses, life can only exist if they have a certain size and so we observe only the universe that we could observe.
 
  • #11
Ivan Seeking
Staff Emeritus
Science Advisor
Gold Member
7,213
176
There is one hypothesis floating around that has universes constantly bubbling up in a process of infinite creation, but only those universes having critically valued physical constants, such as the total energy of the universe, can exist.

It has often been noted that were the physical constants slighty different than what we find, the universe as we know it could not exist.
 
Last edited:
  • #12
Ivan Seeking
Staff Emeritus
Science Advisor
Gold Member
7,213
176
On a related note, this was in the news today, but I don"t see a formal publication listed yet, so even the modeling of the hard data, not to mention grand interpretations of that data, have to be taken with a grain of salt for now.

Something may be out there. Way out there.

On the outskirts of creation, unknown, unseen "structures" are tugging on our universe like cosmic magnets, a controversial new study says.

The presence of the extra-universal matter suggests that our universe is part of something bigger—a multiverse—and that whatever is out there is very different from the universe we know, according to study leader Alexander Kashlinsky, an astrophysicist at NASA's Goddard Space Flight Center in Maryland...
http://news.nationalgeographic.com/news/2008/11/081105-dark-flow.html
 
  • #13
Pish! Dark flows are so September 2008.
⚛
 
  • #14
Ivan Seeking
Staff Emeritus
Science Advisor
Gold Member
7,213
176
I'm not surprised. I have been completely preoccupied with the election.
 

Related Threads on Why does the universe has such a huge amount of Energy?

Replies
99
Views
6K
  • Last Post
Replies
16
Views
2K
Replies
48
Views
14K
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
12
Views
2K
  • Last Post
Replies
9
Views
1K
  • Last Post
Replies
16
Views
2K
  • Last Post
Replies
7
Views
2K
  • Last Post
Replies
6
Views
3K
Top