Class G planet
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| PLANETARY CLASSIFICATION | |
| Class G | |
| Classification: | Geocrystalline |
| Age: | 3-4 billion years |
| Diameter: | 10,000-15,000 km |
| Location: | Ecosphere |
| Surface: | Still crystallizing |
| Atmosphere: | Carbon dioxide, some toxic gasses |
| Evolution: | Cools to become Class K, L,M, N, O, or P |
| Lifeforms: | Primitive single-celled organisms |
A Class G planet is a planet that has a mostly carbon dioxide atmosphere with some toxic gasses. (ST reference: Star Trek: Star Charts)
[edit] Planets of this Type
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