Who's "Really" inside the UFOs, indeed? Our benevolent interplanetary overlords, of course! The Aetherius Society is dedicated to working with our Cosmic Masters to use "mystical tools of white magic that can give you the spiritual power available only to advanced adepts centuries ago" in order to overcome the fact that "our world is accelerating into a world of selfishness and materialistic hedonism causing an increase in violence and terrorism around the world and a rapid depletion of Earth’s resources."
The Aetherius Society was founded by George King...
...a pretty serious-looking guy born in 1919 in Wellington, Shropshire, England. He puttered around at various labor professions including as a professional driver (of taxi cabs, limousines, and Jaguars which he test-drove), and also as a firefighter and a security guard. Then he got into Yoga, and from there just blundered into Eastern enlightenment teachings and from there - aliens!
From their FAQ:
Who Are The Cosmic Masters?
"The Cosmic Masters have visited Earth from time to time throughout history. It is the Cosmic Masters who have sent their emissaries to this planet throughout the ages. Beings such as Jesus, Buddha, Krishna, Lao Tzu, Patanjali and others are part of this Cosmic and Solar Hierarchy and have been responsible for giving to humanity our knowledge of Spirituality."
Why Do Flying Saucers Blink In and Out at Times?
"Normally we cannot see their spacecraft as they are for the most part operating on higher frequencies of existence. The Cosmic Masters are able to lower the vibrations of themselves and their spacecraft down to the physical level at will. This is why flying saucers are often seen to blink in and out."
See, everything has a logical explanation.
What Are the Main Beliefs of The Aetherius Society?
"Jesus, Buddha, Krishna and other religious leaders were of extraterrestrial origin and came to Earth to help mankind. Unlike many UFO groups we believe that extraterrestrials are friendly and are here to help humanity in our development. The Mother Earth is a living breathing entity which is thousands of lives more evolved than we are."
...hey, wait a minute, I've never heard of a UFO group that didn't believe in benevolent aliens. Who are these "many UFO groups"?
Anyway, rock on, flying saucer people!