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The Laws of Special Agent
Contrary to many works of science fiction, I tried as much as possible to respect current physics, that's why even the elements which are unlikely to happen one day are based on current physics. First, the wormholes which are physically possible, but I took some liberties on the characteristics of their traversed. Secondly, the communications which are almost instantaneous which are based on neutrinos, a method of sending messages which is physically possible, but I cheated a little by saying that the signal passes through an artificial wormhole created by a relay. Finally, the faster-than-light travel which is based on a physically possible concept, but which will require large amounts of energy, I again found an excuse by saying that the discovery of nuclear fusion had provided the necessary energy.
Cosmology
Since my universe is based in the Milky Way, so there are no mystical or other origins, as in our reality, the universe was born in the Big Bang and then expanded and then gave birth to the first galaxies as well than the first stars. Eventually, the Milky Way will be born from a fusion of two galaxies and thereafter, the stars welcoming the native planets of the different species of the galaxy will form.
Principal Geography & Features
The geography of the world is very diverse, in addition to space which is full of stars, pulsars, black holes, or nebulae of all kinds, each planet, gas giant or moon also has its own geographical characteristics specific to it. Derived from these, each species of the galaxy has adapted to its native planet, which has created very diverse species between them.
Initial Active Setting
The story of my universe begins first within the solar system with the Solar Confederation, but it will very quickly spread to a small region around the solar systems after the discovery of the wormholes. The area covered by my universe will then very quickly expand with the encounter by humanity with several other species to finally include the entire known galaxy. My universe mainly adopts a human point of view since my World Anvil mainly adopts this approach and the story that I have developed so far focuses on the progression of humanity.