It's a beautiful story, and my child-like curiosity would fully agree with you. However, you are not going to find physical evidence for the existence of alien worlds and extraterrestrial intelligence, in the usual sense anyways. Why not? Because we live in a world of energy and not a world of matter, and the aliens are farming us. They aren't physical in the way you consider yourself and the world around you to be physical.

Human beings are like a network of cell phones. We live in a closed-circuit-television system. Human beings are exploited for the energy they produce. Human beings produce sunlight among other things. You never learn this because the truth is hidden from you, and you are born each time with your memory erased. Like someone (ie: Gildaroy Lockheart) performing a memory charm on you. I'm really not kidding. I've seen the aliens, and I remember the past. There is a Rabbi named Manis Friedman. Does the name ring any bells? If not, let me spell it out for you... Man is Fried Man. The search for intelligence should start at home.