private static void GenerateDefaultSnapshot()
        {
            var snapshotEntities = new Dictionary <EntityId, Entity>();
            var currentEntityId  = 1;

            snapshotEntities.Add(new EntityId(currentEntityId++), EntityTemplateFactory.CreatePlayerCreatorTemplate());

            // create the planets
            for (uint i = 0; i < 9; ++i)
            {
                snapshotEntities.Add(new EntityId(currentEntityId++), EntityTemplateFactory.CreatePlanetTemplate(i));
            }

            // create the asteroid belt
            for (int i = 0; i < 1000; ++i)
            {
                float angle = Random.Range(-180f, 180f);

                // asteroids are in a belt that's from 2 to 3.2 AU from the sun
                double orbitRadius = Random.Range(2.0f, 3.2f) * Scales.au2km;

                // TODO: make this a distribution where most are near 1 km in size but a tiny few can be as large as 100 km
                double diameter = Random.Range(10000f, 60000f);

                snapshotEntities.Add(new EntityId(currentEntityId++), EntityTemplateFactory.CreateAsteroidTemplate(angle, orbitRadius, diameter));
            }

            SaveSnapshot(snapshotEntities);
        }