It was said that there are several universes that the Earth belongs to. It is said that there is definitely life there. When you see UFOs appearing on TV every now and then, the idea of extraterrestrial life doesn't seem like nonsense.
Extraterrestrial life forms may have a more advanced civilization than Earthlings. If so, if aliens come to Earth now, Earth could become unhappy.
So we will have to develop technology and civilization that can welcome aliens. At least to meet aliens on equal terms...
