### Planet Modifiers

pm_asteroid_environment = {
	spawn_chance = {
		modifier = {
			add = 10
			is_planet_class = "pc_asteroid"
		}
		modifier = {
			factor = 0
			has_planet_modifier = "pm_asteroid_environment"
		}
		modifier = {
			factor = 0
			num_modifiers > 1
		}
	}
	
	modifier = "asteroid_environment"
}

