From where is the universe expanding?

In summary, the universe is expanding due to the observed redshift in light from distant galaxies and the presence of cosmic microwave background radiation. This supports the Big Bang theory, which suggests that the universe began as a hot, dense singularity and has been expanding for about 13.8 billion years. Dark energy is believed to be responsible for the accelerated expansion of the universe, counteracting the gravitational pull of matter. While the expansion does not affect objects on a small scale, it can cause stretching and distortion on a larger scale. The current consensus is that the expansion is infinite, but this is still a topic of ongoing research and debate.
  • #1
Odette
9
0
Is it expanding from the edges?
Or from the center?
 
Space news on Phys.org
  • #2
As far as we can tell there is no center nor any edges. The expansion is an intrinsic increase in distances between objects.
 
  • #3
Orodruin said:
As far as we can tell there is no center nor any edges.
At all? Or not stable because of the constant expansion of it?
 
  • #4
At all.
 
  • #5
@Odette I recommend the link in my signature
 
  • Like
Likes fresh_42

Related to From where is the universe expanding?

1. How do we know the universe is expanding?

The universe is expanding because of the observed redshift in the light from distant galaxies. This redshift is caused by the stretching of space as the universe expands. Additionally, the cosmic microwave background radiation also provides evidence for the expansion of the universe.

2. What is the evidence for the Big Bang theory of the universe's origin?

The evidence for the Big Bang theory includes the observed expansion of the universe, the abundance of light elements such as hydrogen and helium, and the cosmic microwave background radiation. These observations all support the idea that the universe began as a hot, dense singularity about 13.8 billion years ago and has been expanding ever since.

3. What is the role of dark energy in the expansion of the universe?

Dark energy is a mysterious force that is believed to be responsible for the accelerated expansion of the universe. It makes up about 68% of the total energy in the universe and its repulsive force counteracts the gravitational pull of matter, causing the expansion of the universe to accelerate.

4. How does the expansion of the universe affect the objects within it?

The expansion of the universe does not affect objects on a small scale, such as planets, stars, and galaxies, due to the strong forces holding them together. However, on a larger scale, the expansion causes galaxies to move further apart from each other and the expansion of space itself can cause the stretching and distortion of objects.

5. Is the expansion of the universe finite or infinite?

The current scientific consensus is that the expansion of the universe is infinite. This means that the universe has no boundary or edge and will continue to expand forever. However, some theories suggest that the expansion may eventually slow down or reverse, leading to a finite universe. This is still a topic of ongoing research and debate among scientists.

Similar threads

  • Cosmology
Replies
5
Views
1K
Replies
20
Views
2K
Replies
5
Views
541
Replies
6
Views
1K
Replies
12
Views
1K
Replies
1
Views
1K
Replies
9
Views
2K
Replies
19
Views
2K
Replies
7
Views
1K
Replies
4
Views
1K
Back
Top