← World catalog MOON / 04
Titan
Saturn
A chemically rich world with a dense nitrogen atmosphere, methane weather, surface lakes, and a probable interior water ocean.
BEvidence classStrong inference from multiple independent measurements
- Mean radius
- 2,574.7 km
- Surface gravity
- 1.352 m/s²
- Representative temperature
- about −179 °C surface
- Surface pressure
- about 1,467 mbar
Scientific assessment
Titan offers two distinct solvent regimes: hydrocarbons at the surface and a water-rich reservoir inferred at depth.
- Liquid-water evidence
- Surface methane–ethane lakes; probable subsurface water ocean
- Principal constraint
- Extreme cold and uncertain exchange with the interior
- Principal mission context
- Cassini–Huygens archive; NASA Dragonfly
Comparative evidence matrix
A transparent research-priority index, not a probability of life. It combines solvent evidence, usable energy, chemistry, environmental stability, evidence maturity, and sampling access.