Carbon World Magnetic Field Moderate Activity
Why is this a Carbon World? Your planet's carbon (52.3%) outweighs its oxygen (0.0%), so the mineralogy flips from silicate rock to carbide - a graphite crust over a diamond mantle. Carbon worlds form in carbon-rich disks where there isn't enough oxygen to bind it all into silicates. Instead carbon condenses directly into graphite, carbides, and - under pressure at depth - diamond. They form water-poor, so no life takes hold.
✓ Carbon: 52.3% (>=20% required) ✓ Carbon exceeds Oxygen: 52.3% > 0.0% ✓ Mass: 1.8x Earth (<=8x hycean ceiling)
Habitability Score Uninhabitable
Contributing Factors water 0
No water - the recipe has no hydrogen and oxygen to form it geology 90
Active geology recycles nutrients and drives carbon cycle rotation 100
Optimal rotation period - balanced day/night cycle, moderate weather, and good heat distribution Organic Chemistry 50
Carbon and hydrogen present - organic chemistry possible atmosphere 40
Atmosphere present but composition not ideal for life temperature 40
Extreme temperature - very difficult for life magnetic Field 100
Magnetic field provides radiation protection Physical Properties Mass
1.80x Earth (1.07e+25 kg) Radius
1.22x Earth (7,750 km) This planet: 1.22× Earth radius Earth: 1× (baseline)
Surface Gravity
1.22x Earth (11.9 m/s²) Surface Temperature
240 K (-34 °C / -28 °F) Rotation Period
20.0 hours/day (faster than Earth) This planet: 20 h/day Earth: 24 h/day Orbital Environment Star Type
B-type (Blue Giant) Distance from Star
134.60 AU (20.1 billion km) Orbital Period
493.8 years Atmosphere Carbon monoxide and methane haze over a graphite surface
Surface Characteristics Graphite plains and carbide ridges over a diamond mantle - a glittering coal-black world