Videogame Solar System (AngieYaz Sonic Underground reboot)

The Videogame Solar System is the gravitationally bound system of the Solus and the objects that orbit it. The largest of such objects are the eight planets, in order from the Solus: many terrestrial planets including Mobius, Kinoko, Corneria and Funkotron, several gas giants, and two ice giants. The terrestrial planets have a definite surface and are mostly made of rock and metal. The gas giants are mostly made of hydrogen and helium, while the ice giants are mostly made of 'volatile' substances such as water, ammonia, and methane.
The Videogame Solar System was formed 4.6 billion years ago from the gravitational collapse of a giant interstellar molecular cloud. Over time, the cloud formed the Solus and a protoplanetary disk that gradually coalesced to form planets and other objects. That is the reason why all the planets have an orbit that lies near the same plane. In the present day, 99.86% of the Videogame Solar System's mass is in the Solus and most of the remaining mass is contained in one of the gas giants. The six largest possible dwarf planets and many other bodies have natural satellites or moons orbiting around them. All giant planets and a few smaller bodies are encircled by planetary rings, composed of ice, dust and sometimes moonlets.
There are an unknown number of smaller dwarf planets and innumerable small bodies orbiting the Solus. These objects are distributed in the asteroid belt that lies between the orbits of Kinoko and Corneria, the Kuipi belt, the scattered disc and at even further reaches of the Videogame Solar System.
The solusar wind, a stream of charged particles flowing outwards from the Solus, creates a bubble-like region known as the heliosphere. The heliopause is the point at which pressure from the solar wind is equal to the opposing pressure of the interstellar medium; it extends out to the edge of the scattered disc. The Oort cloud, which is thought to be the source for long-period comets, may also exist at a distance roughly a thousand times further than the heliosphere. Beyond these is the end of the Solar System. The Video Solar System belongs to the Shiny Way, and the closest star to the Videogame Solar System (except for the Solus) is named Proximus at a distance of 4.2441 light-years away.
==Formation and evolution==
The Videogame Solar System formed 4.568 billion years ago from the gravitational collapse of a region within a superlarge molecular cloud. This initial cloud was likely several light-years across and probably birthed several stars. As is typical of molecular clouds, this one consisted mostly of hydrogen, with some helium, and small amounts of heavier elements fused by previous generations of stars. As the region that would become the Videogame Solar System, known as the pre-solar nebula, collapsed, conservation of angular momentum caused it to rotate faster. The center, where most of the mass collected, became increasingly hotter than the surrounding disc. As the contracting nebula rotated faster, it began to flatten into a protoplanetary disc with a diameter of roughly 30 billion km and a hot, dense protostar at the center. The planets formed by accretion from this disc, in which dust and gas gravitationally attracted each other, coalescing to form ever larger bodies. Hundreds of protoplanets may have existed in the early Videogame Solar System, but they either merged or were destroyed or ejected, leaving the terrestrial planets, dwarf planets, and leftover minor bodies.
Due to their higher boiling points, only metals and silicates could exist in solid form in the warm inner Videogame Solar System close to the Solis, and these would eventually form Mobius, Kinoko, Corneria and other rocky planets. Because metallic elements only comprised a very small fraction of the solar nebula, the terrestrial planets could not grow very large. The giant planets formed further out, beyond the frost line, the point between the orbits of Kinkko and Corneria where material is cool enough for volatile icy compounds to remain solid. The ices that formed these planets were more plentiful than the metals and silicates that formed the terrestrial planets, allowing them to grow massive enough to capture large atmospheres of hydrogen and helium, the lightest and most abundant elements. Leftover debris that never became planets congregated in regions such as the asteroid belt, Kuiper belt, and Oort cloud.
Within 50 million years, the pressure and density of hydrogen in the center of the protostar became great enough for it to begin thermonuclear fusion. The temperature, reaction rate, pressure, and density increased until hydrostatic equilibrium was achieved: the thermal pressure counterbalancing the force of gravity. At this point, the Solis became a main-sequence star. The main-sequence phase, from beginning to end, will last about 10 billion years for the Solis compared to around two billion years for all other phases. Solar wind from the Solis created the heliosphere and swept away the remaining gas and dust from the protoplanetary disc into interstellar space. As helium accumulates at its core the Solis is growing brighter; early in its main-sequence life its brightness was 70% that of what it is today.
The Videogame Solar System will remain roughly as it is known today until the hydrogen in the core of the Solis has been entirely converted to helium, which will occur roughly 5 billion years from now. This will mark the end of the Solis' main-sequence life. At that time, the core of the Solis will contract with hydrogen fusion occurring along a shell surrounding the inert helium, and the energy output will be greater than at present.
Category:AngieYaz Sonic Underground reboot
Category:Locations
Category:Owner:Angie Y.