User:Bookreader345/Interastra

The Solar System, often referred to as Home, is a stellar system comprising of the Sun (Sol) and the objects held in orbit by its gravity. The Solar System is generally agreed to end at the outer edges of the Oort Cloud.

There are 8 planets total in the Solar System, they are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. The dwarf planet Pluto was originally classified as a planet but eventually reclassified after the discovery of Eris. There are 9 dwarf planets total: Ceres, Orcus, Pluto, Salacia, Haumea, Quaoar, Makemake, Eris, and Sedna.

Neighboring the Solar System is the Alpha Centauri trinary stellar system, which is a total of 4 light years away.

A little over 16 billion people live in the Solar System.

Venus
Venus (Sol-2) is the second planet of the Solar System and the second planet humanity colonized. While the surface is unhabitable, the atmosphere is not. Aerostat habitats and floating cities dot the planet, with their populations being added up to make a total population of 1 billion. About 3 million people live in its orbit.

Earth
Earth (Sol-3) is humanity's birthplace and the only natural habitable planet in the Solar System. It has a total population of 11 billion. Its only natural satellite is Luna (Sol-3.5), known by Terrans as "The Moon", which has a total population of 10 million.

Among the man-made satellites are a variety of space stations and space habitats. Many communites make their homes in O'Neill Cylinders, Bernal Spheres, and Stanfored Toruses, while the wealthy have privately-owned space stations that they solely live in. The total population of these communities is around 4 million.

Mars
Mars (Sol-4) is the fourth planet of the Solar System and often nicknamed "Humanity's Second Home". It was terraformed and made habitable between in a process that started in the 22nd Century and ended in the 23rd. A total of 4 billion people live on the surface of the planet and 2 million live in its orbit.

Life on Mars is not unique to the planet, with everything living on the surface having Terran origins.

Asteroid Belt
The Asteroid Belt marks the border between the Inner and Outer Solar System - being between Mars and Jupiter. It is prominently known for multiple asteroid mining operations that occur on its asteroids. It has a total population of 100 million, being divided between some of the asteroids and rotating wheel space stations.

Ceres
Ceres is the closest dwarf planet in the Solar System and the only one in the Asteroid Belt. It is the hub for the  asteroid mining operations that occur in the "Belt" (as asteroid miners have dubbed it). It has a total population of around 3 million.

Jupiter
Jupiter (Sol-5) is the fifth and largest planet of the Solar System. There are 73 moons orbiting the planet, with the 4 Galilean moons being the most major. The Galilean moons include of Callisto, Io, Ganymede, and Europa. Only Callisto and Ganymede are inhabited. Space habitats, like those of Earth, are also in orbit of the gas giant along with rotating wheel space stations, their total population adds up to be 13 million.

Europa is the smallest yet most important of the Galilean moons, as it is the first extraterrestrial object found to have life. Life, both multi and unicellular, is primarily found in lakes inside its icy crust and the massive ocean found under it.

Space bases can be found on both Callisto and Ganymede, being the least radiated of the Galilean moons. A total of 2,300 people live on Callisto and 900 on Ganymede.

Saturn
Saturn (Sol-6) is the sixth planet of the Solar System, known for its beautiful and expansive rings. 64 moons orbit the planet, though Titan, Rhea, Dione, Tethys, Iapetus, and Enceladus are the most notable of the bunch. Space habitats and rotating wheel space stations also orbit Saturn, they have a total population of 9 million.

Enceladus is the only other extraterrestrial object to have life, and like Europa - has a subsurface ocean where organisms call home. Unlike Europa, Enceladus's ocean is high in salt.

There are space bases on both Iapetus and Titan. Iapetus has a total population of 1,200 while Titan has a total population of 3,100.

Uranus
Uranus (Sol-7) is the seventh planet of the Solar System, known for being its odd rotation (on its side). It has 28 moons total, with Miranda, Ariel, Umbriel, Titania, and Oberon being the most major. Like Jupiter and Saturn, space habitats and rotating wheel space stations orbit Uranus, they have a total population of 7 million.

Both Umbriel and Titania have bases, Umbriel has a total population of 1,900 while Titania has a total population of 1,700.

Neptune
Neptune (Sol-8) is the eighth planet of the Solar System. It has 14 moons total, Triton is the most major of them. Space habitats and rotating wheel space stations orbit the planet, and have a total population of 5 million.

There are space bases on Triton, Triton has a total population of 1,100.