public void RemoveAsteroid(Asteroid asteroid)
{
this._asteroids.Remove(asteroid);
asteroid.PlanetarySystem = null;
}
public Asteroid(Asteroid asteroid)
: this(asteroid.Center, asteroid.Mass, asteroid.Radius, asteroid.Velocity, asteroid.Name)
{
}
public void AddAsteroid(Asteroid asteroid)
{
this._asteroids.Add(asteroid);
asteroid.PlanetarySystem = this;
}