I love this controversy. I swear it's the most exciting thing in modern physics. The thought that there's something fundamentally wrong with the cosmic distance ladder and the way that we measure the expansion of the universe.

I'm no mathematician or physicist, but this stuff just fascinates me. I interpret it something like:

The further one looks, the faster objects in the universe are expanding. However, when one looks out at the universe, they are looking backwards in time, to a time when the universe was expanding at a more rapid pace. Right? Close to the big bang? Because there was a period of rapid expansion after the big bang, so the universe had to have moved faster in the earlier universe? So the only part of space that actually appears to be static would be around our local space, the stars we can see?

Often the universe is depicted as a giant bubble, expanding outwards in all directions. It is how the human mind is built to think, a classic blunder dating back to the days of Ptolemy, where Earth was the center of everything.

At the edge of our observable universe is the beginning of it all. We can fast forward then through time to see the most modern picture of our universe, the reference frame that is our own galaxy. We are not at rest in a static galaxy, so why should the laws of relativity and dilation not apply to massive objects

Everywhere else we look is in the past, and the cosmic background is visible from every direction. So once expanded in 3D space, and accounting for time, all of space would appear to be accelerating towards the cosmic background and point of the big bang?

“[...]But in 1929 astronomer Edwin Hubble measured the speed of many galaxies and found, to his surprise, that all were moving away from us-- in fact, the further away the galaxy, the faster it was going. His measurements showed that space is expanding everywhere, and no matter where you look, it will seem as if all galaxies are receding because the distance between everything is constantly growing. Faced with this news, Einstein decided to remove the cosmological constant from his equations.” -some scientific American article

It’s not moving away from us, it’s moving towards the beginning of time at a faster and faster rate, but only because we’re looking backwards through time. In reality, due to our reference frame, and other subsequent frames of observed bodies, we are the only point in the observable universe that is in the “present”. To that effect, when everything appears to be moving away from us at a faster and faster rate, it is moving away from the origin (big bang) at a slower and slower rate.

Galaxies are not moving away, they are showing an accelerating speed due to the time difference, and the slightly higher cosmological constant several hundred million years in the past, a constant that scales with time and its relation to distance according to metric expansion and the speed of light. It is the higher constant with relation to distance that gives the illusion of a universe whose expansion is accelerating.

It can be assumed then, that as you move between vast points in space, the universe will update; showing that astronomical objects aren’t accelerating away, but are not in fact moving at all. If not moving towards each other and closer together.

So no matter where you travel, it is likely that the bubble of the observable universe travels with you, you do not accelerate away faster the closer you get to the galaxies that appear from Earth or other reference points from Earth to be expanding faster away.

If you look at the night sky from a planet in one of these far away galaxies, the overall structure of the universe would be very similar if not the same to the structure as it appears from Earth. With all galaxies appearing to be accelerating away from each other at a faster and faster rate.

Sorry im high on shrooms

user:	mr_world
created:	February 20, 2024
karma:	44
about:	mr_world.at.hn