STELLARGEN

Leaving the corona. The solar wind fades to silence.

StellarGen derives every property from one seed. Spectral type, mass, temperature and lifetime come from stellar evolution models.

Crossing the inner system. Gravity wells shift around every orbit.

Orbits are stable by construction. Semi-major axis, eccentricity and equilibrium temperature follow real physics, not random rolls.

Past the frost line. Water ice condenses. Moons form in frozen silence.

Rings get inner and outer radii, composition and optical depth. Roche limit and formation origin are computed from the system.

Deeper into the habitable zone. The right distance changes everything.

Moons have masses, orbits and tidal locking. Ocean worlds and volcanic satellites are identified from physical criteria.

Beyond equilibrium. Methane clouds form. Temperature plunges below 100 K.

Atmospheres are retained or lost by gravity and temperature. Pressure, composition and greenhouse effect are derived, not guessed.

Far beyond the system, a dead star still pulses in the dark.

Ice giants, white dwarfs, neutron stars and black holes use the same seed. Remnant type follows progenitor mass; multi-star systems are supported.