Planet Simulator

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Planet Simulator is a sandbox tool where you design your own planet within realistic boundaries.

## Step 1: Configure Mass, Radius and Density

The first thing you do is configure Mass, Radius and Density of the planet:

* Increasing Mass increases Radius and Density but with a balenced ration
* Increasing Radius decreases Density
* Increasing Density decreases Radius

Mass is in the range of 1 Mimas to 12 Jupiters, Density is in the range of 0.5 g/cm^3 to 50 g/cm^3.

### Step 1.1: Oblateness

This is what makes the planet more oval-shaped, You can only use this feature for planets under 1 Lunar Mass. The oval can be from 0: A perfect Sphere to 1: an oval with the horizontal diameter twice as large as the verticle diameter.

The only way you can make bigger planets oval-shaped is speed up the rotational period, but that only lets it go up to 0.1.

## Step 2: Orbital Characteristics

* Set the Axial Tilt: Min 0°, Max 180°
* Set the rotational period of the planet: Min: 1 hour, Max: 1 year. There is also an option to "Tidal Lock"

## Step 3: Atmosphere

* Atmosphere Pressure: Max 150 Bar for 1 Earth Mass. About 15 Bar for 1 Mars Mass. Maximum limit increases/decreases as you go up/down. Maximum Limit is removed if the planet becomes 5 Earth Masses or bigger.
* Surface Temperature: Max 1500°C, Min -200°C. Temperatures for Mantle and Core are seperate and increase depending on

Atmosphere compositions:

* Oxygen - White
* Nitrogen - Blue
* Hydrogen - Baige
* Helium - Light Grey
* Water Vapour - White
* Methane - Cyan
* Ethane - Blue
* Sulphur - Yellow
* Carbon Dioxide - Baige
* Neon - Glowing Red
* Argon - Light Lilac

Transparency decreases as pressure increases, compositions are only available at the temperature that they are gas. Height increases as Planetry Mass increases.

To make a gas giant, you must:

* Make the planet 5 Earth Masses or bigger
* Increase the pressure to 751 Bars or higher to make enter it into Gas Giant mode.

## Step 4: Internal Structure

On this step, you can mess with the Planet's composition with these factors and each layer (except Radioactives and Carbon) sit on top of each other:

* Carbon - Max percentage: 95%
* Iron - Max percentage: 95% - Melts at 1500°C - Allows the addition of a Magnetosphere if liquid
* Radioactives - Max percentage: 5% - Melts at 1100°C - Rises temperatures inside the planet, which can let the Mantle and Core melt.
* Silicite - Max percentage: 95% - Melts at 700°C - Allowed Techtonics if it is 500°C to 900°C in the Upper Mantle
* Water - Max percentage: 60% - Melts at 0°C, Boils at 100°C - Allows life if liquid and if it covers 0.1% of the surface
* Methane - Max percentage: 60% - Melts at -182°C, Boils at 161°C - Allows life if liquid and if it covers 0.1% of the surface

### Step 2.1: Life

* Allow basic life: Allows basic life, this turns water a slightly purple colour and methane a slightly blue colour
* Allow chlorophyll photosynthesis: Makes water turn a brigter blue, makes methane turn brighter purple. Makes land turn more green around the water.

For this step:

* Atleast 0.1% of surface needs to be covered in liquid Water/Methane
* Between 0.1% and 20% of Carbon in the planet
* Below 2.5% of Radioactives
* No more than 40% of Iron in the composition
* An atmosphere between 0.1 kPa and 500 kPa
* The planet must have an axial tilt between 5° and 40°
* A magnetic field
* More than 5% of Oxygen, Nitrogen and Water Vapour in the atmosphere and trace amounts of Carbon Dioxide, Ozone, Hydrogen.
* Between 4 hours and 40 days rotational period
* Between 0.5 m/s and 50 m/s (Earth is 10 m/s)

All of these will unlock the addition of life and making them more Earthlike will make them grow more and faster.