All Questions
6
questions
0
votes
0
answers
57
views
What is the exact ratio of dark energy to mass?
I need to know the exact ratio between mass and dark energy (total dark energy in the universe / total mass in the universe). I could only find it to 2 decimal points (0.68). I need this to make this ...
0
votes
1
answer
69
views
Does matter experience energy inflation as the universe expands?
Does our "energy scale" inflate as the universe expands? In other words, is the amount of energy we measure as 1 joule today slightly higher than the amount of energy we measured as 1 joule yesterday?
...
- 43
0
votes
1
answer
54
views
Is there scientific evidence that point towards the cause of differently distributed matter through out the Universe? [closed]
If we know from discoveries from cosmology prove that ordinary matter and dark matter are still not enough to explain the structure of the universe and its distribution of matter. There should be a ...
- 13
3
votes
1
answer
120
views
How should $\nu= m \frac{{c^2}}{h}$ be interpreted physically?
In a recent lecture on Conformal Cyclic Cosmology by Roger Penrose this equation was displayed
$$\nu= m \frac{{c^2}}{h}$$
derived by substituting Einstein's equation on the equivalence of mass/...
- 11.7k
4
votes
2
answers
5k
views
Does "Infinite Universe" Imply Infinite Mass?
In accordance with the FLRW Metric with a curverature of $k=0$ (as observationally supported by several of NASA's experiments including WMAP, Planck satellite, DASI, etc.) the universe is spatially ...
- 1,140
4
votes
1
answer
775
views
The FRW universe is NOT asymptotically flat? Its mass?
The Friedman-Robertson-Walker (FRW) metric in the comoving coordinates $(t,r,\theta,\varphi)$ which describes a homogeneous and
isotropic universe is
$$
ds^2\,= -dt^2+\frac{a(t)^2}{1-kr^2}\,dr^2 + a(...
- 117