I have read quite a lot of alien conspiracies in the past. I believe earth has been contacted by aliens for decades now and this has been covered up by ppl in power - Illuminati?
These aliens are called the 'greys' (the typical alien figure, 2 big eyes, small chin, large head)
Apparently they were similar to humans thousands of years ago but were very scientific and technological - during discovering new technology they became greedy with future progression/evolution and in the process lost their souls (yes 'whack' i know). hence why they come to earth to try and learn how to get their souls back.
ppl in power are in cahoots with the greys: the greys can study us secretly whilst in exchange they give some tech to these illuminati ppl eg. microwaves, stealth technology, recent being anti mavity engines (still being tested in underground facilities)
ive said too much - must go hide
P.S. bush is the puppet in this process - ultimate goal is a 1 government ruled earth