&gt; come over and eat us if we said hello<p>It&#x27;s so expensive in energy to do this that it&#x27;s unlikely.<p>Even the moon, if it was made of gold bars stacked at the ready to be picked up and brought back to Earth, it wouldn&#x27;t be worth it.<p>Even if you had technology to transport a significant force across the span of light years, why endanger that with the risk of resistance? Just go to one of the billions of habitable planets that don&#x27;t have complex, radio transmitting intelligences on it.