Sol System

By far the most well studied and documented planetary system, the Sol System was the origin point of humanity.

Before the expansion into the galaxy, it was widely known by its inhabitants as "The Solar System" and the star was known as "The Sun."

The planets are named for gods of an ancient religion named for the people who practiced it known as "Roman," itself borrowing heavily from a similar religion called "Greek," hailing from an ancient people of the same name.

The star remained unnamed until the late 2800s when humans began to colonize other stars. It used the Roman name "Sol," having previously only been used in works of science fiction. It is also the bar other stars are measured against.

## Planets

While in the past the number of planets has been different, the number is accepted to be 8.

### Inner Planets

Four rocky bodies orbiting inside the asteroid belt with an overall distance of 1.5 AU.

#### Mercury

The smallest of the four inner planets and closest to the star. Home to several hundred solar power plants installed during the interplanetary civil war and mining stations for Tritium. Also host to Mercury City, a massive ecumenopolis.

#### Venus

Once a toxic planet with sulfuric rain and days longer than its years, Venus was made habitable in the 2340s by introducing new or converting old atmospheric elements to lower its atmospheric pressure to just 2.73 Bar. After its terraformation it became the Sol system's breadbasket, as the 58 Earth-day long quarters, one of which features constant sunlight, have lead to giant crops similar to those grown in Alaska before Earth's change in climate. Nearly its entire surface was dedicated to growing food for the rest of the system, as the flat terrain was well suited to it.

#### Earth

The original home to humanity as we know it. Its distance from its sun, mass, surface gravity, average surface temperature, and atmospheric pressure are the basis for all measurements used by humans on other planets. The civil war against Mars in 2323 resulted in relentless bombing, many of which kicked enough of Earth's crust into the atmosphere and beyond to create the new ring system and cause an ice age. Some of the more advanced weapons also vented 9% of its atmosphere, which has led to a permanent chill. Many humans once living on Earth have since left for more comfortable worlds, and most of those that remain despise those living beyond Lunar orbit.

The Moon, now called Luna to avoid confusion with the myriad other moons in the galaxy, is about 1 quarter the size of earth. It previously held the record for largest moon in relation to its parent. Now it is third, only to Ingen in second and Yon in First.

#### Mars

The industrial center of the system. Massive amounts of fossil fuels discovered in the 2030s sparked an age of riches and glory. In the 2083 the planets atmosphere was at tolerable pressures, and the atmosphere became breathable in the 2150s, shortly before declaring themselves self sufficient and attempting to cease contact with Earth. It reached a state of independence several times in the millennia before the solar system was left behind by Earth's former government, and held a near monopoly over the outer solar system until the development of Titanian colonies, which caused Mars to lose control of Saturn.

### Outer Planets

Four planets mostly composed of hydrogen at an overall distance of 30 AU. Some trace amounts of methane in the atmospheres of the outer two give them their green and blue colors.

#### Jupiter

The largest planet in the solar system known for its four massive moons, massive size and former bright red hurricane like storm that raged for over 400 years before finally fading away in the late 2000s. This planet's mass and size is the mark that other gas planets are measured against.

#### Saturn

This planet is similar to Jupiter, and is known for its beautiful icy ring system and extremely low density and mass in relation to its size. Its largest moon, Titan, ls the most naturally earthlike body in the solar system, and the basis for the "Cryoterra" class of planets.

After the desertion of Earth, stations built within the rings became prime real estate, granting views of the rings from within. Titan is also home to several stations in its orbit and ground based dome cities with thriving tourism industries. The partial terraformation of the moon led to the clearing of much of the organic haze in the atmosphere, granting clearer views of Saturn and the stars. The price of tourism has increased accordingly.

#### Uranus

The first of the two ice giants. It is known for not rotating, but rather rolling on its side. Or, in other terms, having an extreme obliquity of 97 degrees. It also lacks the cloud bands normally associated with gas planets. It has a nearly featureless green haze.

#### Neptune

The second of two ice giants. It is the furthest planet from Sol and is known best for that reason and having a large retrograde moon, Triton.

### Dwarf Planets

This system is home to up to 10,000 known dwarf planets. Notable ones include Pluto, the largest. Eris, the most massive, Ceres, the closest to the sun, and Sedna, the furthest from the sun.

## Seasons and Climate

Earth has an average temperature of 15 Celsius or 60 Fahrenheit.

Mars has an average temperature of 1 Celsius or 33 Fahrenheit, and suffers from more intense seasons than earth does.

Venus has an average temperature of 27 Celsius or 80 fahrenheit and has little to no seasons.

## Life

Humans currently live on two of the three habitable worlds as earth was abandoned in favor of Kyandor in 2901. (See Root Timeline)