How could blowing up a balloon represent the expansion of the Universe?

How could blowing up a balloon represent the expansion of the Universe?

But it is true that space itself is stretching out between galaxies like the rubber stretches when a balloon is inflated. This stretching of space, which causes the distance between galaxies to increase, is what astronomers mean by the expansion of the Universe.

In what ways might this balloon be not a good model for expanding universe?

An inflating balloon is not exactly like the expanding universe. For one thing, the surface of a balloon has only two dimensions, while space has three dimensions. But it is true that space itself is stretching out between galaxies like the rubber stretches when a balloon is inflated.

Why is the universe getting bigger?

Dark energy may also be the reason for the universe’s accelerated expansion today. The new theory suggests that there was a third dark-energy episode not long after the big bang, which expanded the universe faster than astronomers had predicted.

What is the balloon theory?

The Balloon Theory describes a four step method to help the therapist facilitate growth and understanding, by identifying the underlying fears and defenses, which thwart intimacy and create distance in relationships.

Is the universe expanding like a balloon?

I’ve heard that the universe is expanding similar to a balloon being blown up with all reference points growing further apart. If this is true, then all movement is perpendicular to the point of origin (the “center of the balloon”). An observer on the balloon (Earth) would see lateral movement of all stars in all directions except ahead and behind.

What is the third dimension in the balloon analogy?

The third dimension in the balloon analogy (i.e. the direction which is perpendicular to the balloon’s surface and which allows us to see the balloon’s curvature) is the equivalent of the FOURTH dimension in our universe.

What is the best analogy for the expanding universe?

One famous analogy to explain the expanding universe is imagining the universe like a loaf of raisin bread dough. As the bread rises and expands, the raisins move farther away from each other, but they are still stuck in the dough.

What is the problem with the balloon analogy?

The problem with the balloon analogy is that it’s a two-dimensional analogy for a three-dimensional situation. The way you’re supposed to think about the balloon analogy is that everything which happens in two dimensions on the balloon’s surface actually happens in three dimensions in the universe.

https://www.youtube.com/watch?v=N0WjV6MmCyM