Pluto

## Paradise Habitability

> *Originally considered a full planet by many people, Pluto was ultimately classified as a dwarf planet in 2006 when the International Astronomical Union set down the official conditions for planethood, because it had not "cleared the neighborhood" around its orbit.*
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> S*ince the early days of interplanetary colonization, Pluto has been a goal for many people, but its frigid conditions and distant orbit made it a challenge. It is up to you to rise to meet that challenge.*
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## About

**Pluto** is a large dwarf planet that is very cold and has practically no atmosphere. Pluto lies in the Kuiper belt, a region just past the orbit of Neptune, although because of its elliptical orbit, it is sometimes closer to the sun than Neptune. It was the ninth planet of the solar system before it was demoted.

Pluto, small as it is, has five moons: Charon, Styx, Nix, Kerberos and Hydra, with Charon being the closest to Pluto and Hydra the most distant. Charon has half the diameter Pluto does, and is also a playable world in TerraGenesis.

Three of Pluto's moons count as Pluto's natural satellites in-game, and so can have habs and spaceports built on them, these are Charon II (Small), Nix I (Tiny) and Hydra I (Tiny).

## Strategy

Be sure to build the cities in places with high elevation (check the map on elevation mode) to avoid flooding.

First increase Mining revenue so can start earning credits. Alternatively, can immediately build two or more cities, not invest in mining at all, and wait for the 'trade route established' event to pop up, which will earn a lot of credits without it costing anything. Players that played on the Moon will obviously recommend the second option, as Pluto is pretty much the same size as the Moon except it's a bit smaller.

Be sure to decrease the amount of water frozen in ice before increase pressure and temperature too much, otherwise the planet will flood. Be especially careful with Soletta.

The spaceport is the better choice to raise the pressure, but downgrade it to to level IX using the slider because 55 pressure/min increase is hard to balance out.

## Trivia

* Pluto is very far away from the Sun, which means that it receives very little of the sun's light and heat. Even if we heat it, plant life can't survive without our help — it's very dark here. To make plants survive we need to place a large light thing orbiting Pluto, to light different places and help plants survive.
* Pluto has a thin atmosphere in real life. As it approaches perihelion, the ice sublimates into gas and thickens the atmosphere. When it approaches aphelion, the atmosphere dissipates, as the gas changes back to ice.

* Pluto was the ninth planet from 1930 to 2006. Now it's a dwarf planet, because it didn't clear its orbit. Eris, Makemake and other dwarf planets share Pluto's orbit trajectory.

## Attributes

### Temperature

33,000 (min)
44,000 (mean)
55,000 (max)

### Biomass

* Pluto and Charon are sometimes called a double planet system, because they are very close to each other, orbiting around one center of mass, and their sizes are comparable. Charon's radius is more than half of Pluto's. For example the radius of Earth's Moon is just over four times shorter, so Earth and Moon cannot be called a double planet system.
	+ However, in game, the Charon to Pluto radius ratio is the same as that of Phobos to Mars.[1]
* In real life, Pluto has a blue atmosphere, despite the surface being brown.
* Pluto is the biggest dwarf planet in our Solar System, slightly bigger than Eris and much bigger than Makemake, Ceres etc.
* Ironically, Pluto was thought to be a huge "Planet X" that was *possibly bigger than Jupiter*, only for it to turn out that it was smaller than our own Moon. People thought Uranus and Neptune's orbits were being disturbed, although when the Voyager 2 space probe flew by them both and giving accurate measurements for their mass, it turned out that those false positives went away.