Concerning the book “Light of the Stars: Alien Worlds and the Fate of the Earth,” the lecture Adam Frank gave on Youtube is promoting the new atheistic religion now rising on earth, which I would call “planetary socialism.”
It has an eschatology of contact with “exocivilizations” (alien ETs) who will instruct us in how to make heaven on earth. He does not claim to be actually contacting aliens, but he says he is using computer simulations to figure out what a study of them might tell us about how to cause some part of humanity to evolve to a higher state of interaction with the planet, and supress those that refuse to improve.
I think some political leaders in the 20th Century tried this using different names.
I recommend these books by the Mises Institute on Socialism.