pub const EUROPA_MASS: f64 = 4.7998e22;
pub const EUROPA_RADIUS_M: f64 = 1_560_800.0;
pub const JUPITER_MASS: f64 = 1.8982e27;
pub const JUPITER_RADIUS_M: f64 = 69_911_000.0;
pub const JUPITER_EUROPA_DISTANCE_M: f64 = 671_100_000.0;
pub const SIDEREAL_ORBIT_PERIOD_S: f64 = 3.551 * 86_400.0;
pub const SYNODIC_PERIOD_S: f64 = 3.553 * 86_400.0;
pub const SURFACE_GRAVITY_M_S2: f64 = 1.314;
pub const ESCAPE_VELOCITY_M_S: f64 = 2_025.0;
pub const GEOMETRIC_ALBEDO: f64 = 0.67;
pub const SOLAR_CONSTANT_AT_EUROPA_W_M2: f64 = 51.0;
pub const H24_RUNTIME_HOURS: u64 = 24;
pub const EUROPA_DAY_HOURS: f64 = 85.2;
pub const MIN_SURFACE_TEMP_K: f64 = 50.0;
pub const MAX_SURFACE_TEMP_K: f64 = 125.0;
pub const COSMIC_RAY_DOSE_MSV_DAY: f64 = 5.4;

pub mod environment;
pub mod exosphere;
pub mod geodata;
pub mod geology;
pub mod interactions;
pub mod lighting;
pub mod missions;
pub mod observation;
pub mod physics;
pub mod rendering;
pub mod resources;
pub mod surface;
pub mod temporal;
pub mod terrain;
