ship.pos = new Vector3(earth.pos.x, earth.pos.y + earthWidth / 2 + 300e3f);
ship.addBehavior(new RigidBody());
ship.rigidBody().mass = 78e3f;
ship.rigidBody().velocity.x = 7700f;
earthGravity = new PointGravity(earth);
moonGravity = new PointGravity(moon);
ship.rigidBody().addForce(earthGravity);
ship.rigidBody().addForce(moonGravity);
//earth.rigidBody().addForce(moonGravity);