The infinite universe is comprised of worlds within worlds, in that etheric worlds interpenetrate with one another and with our world. The spacecraft, popularly called 'flying saucers' or 'UFOs', often originate from invisible etheric planets, and those craft are capable of passing from an etheric level of matter to another level, such as the Earth's 3rd dimension. They can materialize there, thus becoming visible, and then disappear by means of dematerialization, so that they return to an etheric state.
Those extraterrestrial beings live in their own higher dimensional worlds, made of matter which we cannot directly perceive with our limited senses.
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Sex lies at the root of life; we can never learn reverence of life until we know how to understand sex.
---Havelock Ellis (1859---1939)