Nothing expanding into nothing.

  • Thread starter Victor
  • Start date
  • Tags
    Expanding
In summary: Reading that one is only good if it is correct.In summary, the university consists of nothing, except for the planets, stars, and the stars. There is no particle accelerator at the university.
  • #1
Victor
2
0
From what I've heard, the university consists of nothing, except for the planets, stars, and the stars "output". (And of course also some other smaller objects).

If universe consists of nothing, how would it then expand.

How would nothing, expand into nothing? If the outside of the universe is "nothing" then it would be a part of the universe already.

Otherwise, if we say the "outside" actually existed of something, then the energy of the outside would be added to our universe, e.g. energy would be created.

So simply, how can nothing expand into nothing?
 
Physics news on Phys.org
  • #2
dark matter, it takes up most of the universe
 
  • #3
Read http://curious.astro.cornell.edu/question.php?number=274 . Still have questions?
 
Last edited by a moderator:
  • #4
Thank you honestrosewater, very good article.
 
  • #5
If the spatial extent of the Universe is infinite as it is thought to be then there was an infinite spatial extent at the moment of the Big Bang and the matter in the Universe is just expanding into that.
 
  • #6
Victor said:
From what I've heard, the university consists of nothing, except for the planets, stars, and the stars "output". (And of course also some other smaller objects).
Wow. My university doesn't even have a particle accelerator.
 
  • #7
Nothing from nothing

Victor said:
From what I've heard, the university consists of nothing, except for the planets, stars, and the stars "output". (And of course also some other smaller objects).

If universe consists of nothing, how would it then expand.

How would nothing, expand into nothing? If the outside of the universe is "nothing" then it would be a part of the universe already.

Otherwise, if we say the "outside" actually existed of something, then the energy of the outside would be added to our universe, e.g. energy would be created.

So simply, how can nothing expand into nothing?


The topic of "nothing" and whether such a thing as nothing exist has long been debated in philosophy. The vacuum of space is not composed of "nothing" but various forms of energy called the quantum foam. One could also claim that even the so-called "stuff" that planets, stars and people are composed of "nothingness". Though this may be a little tougher to side with indeed one must be taken aback by the fact the average dense material here on Earth has more space between the atoms than there is material making objects here on Earth made more of psace than material.

Nothing cannot exist in the presence of something. The two cannot coexist. You cannot observe nothing since the observer is composed of something which contaminates the state of "nothingness". Whether the universe is composed of something other than mental states is a hotly debated question between materialist and idealist.

How can "something" arise from "nothing"? How can something mental (a thought) influence matter, such as your brain telling your arm to move? Are there really any fundamental buildign blocks to matter or is the universe an unbroken whole?

The Book of Nothing : Vacuums, Voids, and the Latest Ideas About the Origins of the Universe
by JOHN BARROW




Look inside this book
Share your own customer images
Availability: Usually ships within 1-2 business days from these sellers.



30 used & new from $6.50
Edition: Hardcover
 
  • #8
Read that one too. Easier to understand.
 
  • #9
Picklehead said:
Read that one too. Easier to understand.
Reading that one is only good if it is correct.
 

1. Is it possible for nothing to expand into nothing?

No, according to the laws of thermodynamics, nothing cannot expand into nothing. This is because energy must always be conserved and cannot be created or destroyed.

2. How can something come from nothing if nothing expands into nothing?

The concept of something coming from nothing is still a topic of debate and requires further research and understanding. Some theories suggest that the universe may have emerged from a quantum fluctuation or a singularity, but these ideas are still being explored by scientists.

3. Can nothing expand without something causing it?

No, expansion requires energy and a cause in order to occur. In the case of the universe, the expansion is driven by the force of dark energy, which is thought to make up about 68% of the total energy in the universe.

4. Does the expansion of the universe violate the law of conservation of energy?

No, the expansion of the universe does not violate this law. While the overall energy of the universe is believed to be constant, the expansion causes a decrease in energy density, which is balanced by the increase in the volume of space.

5. What evidence do we have for the expansion of the universe?

The expansion of the universe is supported by various pieces of evidence, such as the redshift of light from distant galaxies, the cosmic microwave background radiation, and the observed distribution of galaxies in the universe. These observations provide strong evidence for the expansion of the universe and have led to the development of the Big Bang theory.

Similar threads

  • General Discussion
Replies
25
Views
2K
  • Cosmology
Replies
17
Views
2K
Replies
12
Views
1K
  • Special and General Relativity
2
Replies
40
Views
2K
  • Other Physics Topics
Replies
8
Views
1K
  • Classical Physics
Replies
1
Views
647
Replies
24
Views
2K
Replies
2
Views
535
Replies
3
Views
2K
Replies
54
Views
3K
Back
Top