Are we living in a black hole?

  • Thread starter johne1618
  • Start date
  • #1
johne1618
371
0
If the universe is all there is then it can't be radiating light to anywhere else. Thus light must be trapped inside it like light is trapped inside a black hole.

If we carry this analogy further then maybe the size and mass of the universe is given by the expression for the Schwarzschild radius of a black hole:

2 * G * M / R = c^2

where M is the mass of the universe and R is the size of the universe.

If you put this expression into the Friedmann equations for the universe, together with the assumption of a flat spacetime, you find:

R = c * t

where R is the size of the universe and t is the age of the universe.

Also one finds a dark energy term such the the density (rho) of dark energy is given by:

rho = (1 / 8 pi G) * 1 / t^2.

This model gives the present density of dark energy rho_0 as

rho_0 = H_0^2 / 8 pi G

Putting in the present Hubble constant H_0 one finds a value of rho_0 which is a few proton masses per m^3.
 

Answers and Replies

Suggested for: Are we living in a black hole?

Replies
9
Views
3K
  • Last Post
2
Replies
65
Views
10K
  • Last Post
Replies
24
Views
6K
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
5
Views
7K
  • Poll
  • Last Post
4
Replies
137
Views
24K
  • Last Post
Replies
2
Views
2K
Replies
4
Views
2K
Replies
33
Views
15K
  • Last Post
Replies
4
Views
2K
Top