From surviving ancient manuscripts it is clear that there has always been a belief that new lands could rise up from the ocean, while old ones could sink into the sea, destroying former civilizations in the process. The most famous of all the lost lands is that of Atlantis, described in great detail by Plato almost 2,500 years ago.
Space exploration is a grand adventure. Its mystery has always captivated us and the inevitable discoveries to come will add to the many cosmological insights we already have. But let this list serve as a warning for any weary inter-solar travelers. The universe can be a very frightening place. I hope no one should ever find themselves stuck in one of these worlds.