I'd like to humbly suggest that, if given the opportunity, one experiment with DMT. It's the closest thing to a "nearest neighbor" argument that I can come up with, but of course I have no explanation. This is the best write-up that I've come across on the subject: http://ewwty.com/2012/02/24/dimethyltryptamine-dmt-experienc... And for a longer treatment I recommend reading "The Cosmic Serpent", which centers around…
It sounds silly but the effect of DMT is not like a typical drug. The universal experience of flying through "hyperspace" and feeling some intelligent force attempt to interact with you is a legitimate mystery of brain chemistry. It exists everywhere in nature including the Acacia tree which is thought to be the "burning bush" from the Bible.
I posted this because I feel it a very real possibility that our proximity to alien life has nothing to do with physical distance or resources, so to speak.