Chapter 30: Planet in Numbers
Volume I has collected a vast amount of data. This chapter is a consolidated physical reference for Théxar, combining key figures from all chapters.
Surveying the mountain passGeneral Parameters
| Parameter |
Value |
Chapter |
| Age |
6.5 billion years |
12 |
| Mass |
5.3172 × 10²⁴ kg |
03 |
| Radius (mean) |
6 112 km |
03 |
| Gravity |
9.5 m/s² |
03 |
| Density |
5.5596 g/cm³ |
03 |
| Day |
27.3 hours |
03 |
| Year |
178.2 days |
03 |
Atmosphere Composition
| Gas |
Share |
| N₂ |
71.8% |
| O₂ |
22.6% |
| Ar |
2.9% |
| CO₂ |
0.8% |
| H₂O |
0.5% |
Hydrosphere
| Parameter |
Value |
| Water coverage |
67% |
| Freshwater |
2.8% of hydrosphere |
| Deepest point |
9 847 m |
Biosphere
| Parameter |
Value |
| Plant species |
~380 000 |
| Animal species |
~1.8 million |
| Class Thermochromadae |
~24 000 species |
| Primary production |
120 Gt C/year |
| Forest cover |
40% of land |
