>> it is really tough because we have seen objects enter our solar system from somewhere else. and typical signature that they came from somewhere else is the speed at which they are moving. you know that the higher the altitude from which something falls the faster it is moving. as something enters our solar sam from elsewhere, laws of fikzs fikz physics makes it as though it fell from that amazingly far stance. so that makes this intra stellar travel so difficult. if we were do it, some other alien species that isness have aed were do it, when you get to your destination, you will be moving ...