Not to be confused with the Observable Universe, the region within a universe that can be observed from a given point. Not to be confused with the Local Universe, which refers to the universe of humanity.
A universe is a verse that consists of a cosmic webs containing different realities. They consist of direct mappings from strongly enforced laws to physical objects. Universes can be described as independent segments of possibilities. A bubble of spacetime with a defined beginning point (typically a Big Bang) and a set of physical laws, which may or may not line up with the ones humanity observes. These Infinitely-Expanding Universes are completely different from the Observable Universe. As universes are infinite in size and dimensionality
A Universe's laws cannot be changed without directly modifying them, or via the laws of a Multiverse. title:sigma verse
Transport[]
Inter-universal travel is extremely difficult and only is possible for extremely advanced civilizations through the use of portals, dark matter energy, time maneuvering, or other reality-warping mechanisms. Additionally, Transcendent beings can traverse through universes easily due to the nature of their existence.
Formation[]
A typical universe starts in a big bang at Planck Temperature that creates space-time. Eventually gluons form through the sea of energy. These gluons can eventually form into quarks, which create protons and neutrons. Protons come together, sometimes with neutrons, to form atoms, the basic building blocks of all material. These atomic nuclei also form electrons around them to propel against protons. This forms an atom, the basic building block of all material. The first atom is hydrogen, but then helium atoms form and a trace amount of lithium. These atoms clump together to form gas particles which collide to form the first Population III stars. These stars have only gas plants orbiting them. These stars can create elements heavier than lithium, up to iron for the most massive stars. When the high-mass stars go supernova they can make even more heavy elements than iron. The next generation of stars formed after this will have more heavier elements, so they have rocky material around them which is used to form terrestrial planets and asteroids.
Other information[]
Most universes would eventually experience vacuum decay as the second law of thermodynamics ensures that energy becomes less and less usable over time. This may not always be the case with alternate physical laws, though. Examples include universes that do not follow the law of thermodynamics or have infinitely expanding energy from an unknown source. As for why most universes experience a vacuum decay, it can be explained with set theory. Imagine universes that experience a vacuum decay (U1) are represented as the set of all decimal numbers, while the universes that don't (U2) are the set of all odd numbers divisible by 5 without becoming a decimal or including decimal numbers. Now, as you can tell, U1 is much larger than U2, which is true, so now you can rest assured about seemingly nonsensical elements. (Edit: Now it's TRULY a larger infinity. I didn't want it to just end on such an explanation as "Higher Chance of Finding X")
For Universes that do not experience such phenomena, there is a common type of universe that can be found without this phenomena. These universes are called Eternalverses in this wiki. Eternalverses follow the physics the Steady-State Theory proposes, allowing these Eternalverses to expand infinitely and exist infinitely.
Trivia[]
A civilization that controls all of the resources available in an entire Universe is called a Type 4.0 Civilization.
Universes have no borders. You must be a transcendent being to pass through unquantifiable distances between different Infinite Universes.