03 · terrestrial
Earth
The only body in the system confirmed to hold liquid water at the surface. Continents, weather, and a thin blue limb.
- Distance from Sol
- 149.6 m km
- Surface gravity
- 9.81 m/s²
- Day length
- 23.9 hrs
- Mean temperature
- 15 °C
- Orbital period
- 365 days
Atmosphere
78% N₂, 21% O₂, trace argon and CO₂. A 100 km envelope that scatters blue, holds weather, and burns incoming rock. Night side: cities.
Notes
The pale blue limb is Rayleigh scatter in 20 km of air. Oceans cover 71%. City lights on the night side mark the only confirmed technological species in the system.
Illustrative scale · orbital distances compressed. Not an ephemeris.