Section II
Summary of the Study
9. Extra-terrestrial Hypothesis
The idea that some UFOs may be spacecraft sent to Earth from another civilization, residing on another planet of the solar system, or on a planet associated with a more distant star than the Sun, is called the Extra-terrestrial Hypothesis (ETH). Some few persons profess to hold a stronger level of belief in the actuality of UFOs being visitors from outer space, controlled by intelligent beings, rather than merely of the possibility ... Read even more
