Is there any physical proof of aliens on earth?
Unidentified Flying Objects: What is the single best proof of aliens existing?
Why should I believe in aliens? What if the asteroid that killed the dinosaurs was a UFO and we are the aliens? How do you think the world would react to the existence of aliens if proved, as of now? What if the asteroids that killed the dinosaurs was a UFO and we, the humans, are the aliens? What are aliens? Why shouldn't we believe in aliens? What if there aren't any aliens? Question That Contains Assumptions: Why would the U.S. government want to hide the fact that aliens exist? Why do people lie about aliens? If aliens do exist, will the government try to hide it? Why? Is it true we were really brought to earth by aliens? Do you believe in the theory of "Ancient Aliens"? If aliens were watching us right now, what would they think is the most illogical thing humans do? How would the world react to the discovery of aliens? There is show on history TV alien ancestor is it possible our gods are aliens? Are there any real cases of human encounter with alien? Which fictional aliens are the most evil and why? Did Einstein meet aliens as shown in history TV in Ancient Aliens? Is it true? How historically accurate is the evidence shown in "Ancient Aliens" from History Channel? Do you believe in what they say in Ancient Aliens? What do aliens look like? Why are governments going to such length to hide aliens and UFOs? Why is it so believed that aliens (if they exist) will be smarter than us human beings? What do you think of the series Ancient Aliens? Despite all the CREDIBLE witness testimony & evidence to the contrary,why are NASA not admitting there is intelligent Alien life? Where can we hide if aliens attack the earth? What is your review of Ancient Aliens (TV series)? What religions would aliens have?