PLANET CLASSES

ATMOSPHERE CLASS

Planet Atmosphere Classes are subject to change as new astronomical data is acquired.

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Hydro-Helium

75%-90% Hydrogen

10%-25% Helium

Toxic

Example is Jupiter, Saturn

Hydro-Helium-Meth

80%-83% Hydrogen

15%-19% Helium

1%-3% Methane

Toxic

Example is Uranus, Neptune

Nitro-Oxy-Argon-Vapor

78% Nitrogen

21% Oxygen

1% Argon

Trace Water Vapor

Breathable

Example is Earth

Carbon-Nitro-Argon

96% Carbon Dioxide

2% Nitrogen

2% Argon

Toxic

Example is Mars

Carbon-Nitro

96.5% Carbon Dioxide

3.5% Nitrogen

Toxic

Example is Venus

Nitro-Meth-Carb-Hydro

94.2% Nitrogen

5.65% Methane

1.6% Hydrocarbons

0.099% Hydrogen

Toxic

Example is Titan

Carbon-Mono-Meth-Vapor

Carbon Dioxide

Carbon Monoxide

Methane

Trace Water Vapor

Toxic

Example is HD 189733 I

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