europas 0.0.3

Europa celestial simulation crate for the MilkyWay SolarSystem workspace
Documentation 
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fn main() {
    let orbit = europas::physics::orbit::EuropaOrbit::new();
    println!("Semi-major axis: {:.0} m", orbit.semi_major_axis_m);
    println!(
        "Orbital period: {:.2} days",
        orbit.orbital_period_s() / 86_400.0
    );
    println!(
        "Speed: {:.1} m/s",
        orbit.orbital_speed_m_s(orbit.semi_major_axis_m)
    );
    let rot = europas::physics::rotation::EuropaRotation::new();
    println!("Synchronous: {}", rot.synchronous);
    println!("Equatorial speed: {:.2} m/s", rot.equatorial_speed_m_s());
}