A cosmic horizon limits the observable universe. Beyond the cosmic horizon, there are other galaxies, but their light has not yet had time to reach us. This is because space and time were created in the Big Bang about 14 billion years ago. So the universe is 46 billion light years away from us in every direction.
Let’s just pause for a moment to acknowledge the time and effort that went into making these videos. It’s unbelievable, and I feel like they deserve so much more.
Observable universe
The observable universe is a spherical part of the universe. It can currently be observed from Earth or space-based telescopes and probes. There could be 2 trillion galaxies in the Known Universe Nevertheless, the New Horizons mission reduced this number to several hundred billion in 2021.
Big Bang cosmology postulates that the observable universe is a spherical volume centered on the observer. Each location in the universe has its own visible universe. This fact may or may not overlap with the one centered on Earth.
The visible universe: what we can see
The visible universe has a radius of about 14.0 billion parsecs (45.7 billion light-years), and the common edge of the universe lies at a distance of 14.3 billion parsecs (46.6 billion light-years).
According to several well-known but speculative arguments, even our universe seems to be a part of a vast multiverse. Basically, it’s either higher dimensions or a difference in physical laws or physical constants. Or a slightly altered version of the universe we know.
No edge of the universe is visible as far as we can tell. There is an infinite amount of space. And throughout the limitless universe, galaxies occupy every available square inch of space.
To wrap things up
That’s just the way the universe is. Like a rubber band, the space between all its galaxies, planets, and stars is constantly expanding. It never ends, but it also never stops growing. The actual edge of the universe does not exist, according to scientists. However, what man can see of the universe has a limit.
I choose finite because ‘parallel universes’ most intrigue me. Still, the shape of the universe we live in may be one of these mutable forms. If forces from parallel universes interact with ours at different points in time, they could easily affect not only the shape but also important characteristics.
