I feel that if the Sumerian civilization is depicted by the descendents of the Sumerians themselves to be of non-human origin, the relevant legends should be examined carefully. Few remember that Angels and their glowing craft had a key role in history of diverse nations. Angels are celestial beings believed to be a messenger or mediator between God and humankind. In ancient Mesapotomia, ancient Greece, Judaism, Christianity and in Islam angels were sent as divine messengers to humans to instruct, inform, or command. An angel visited Mohammed and directed the introduction of Islam.
Angels also function as heavenly warriors and as guardians.
Many abductees claim healing, love and miracles from the angels. Angels are often called the Sons of God. In traditional Israelite thought, angels were assumed to have the form of human males, and as a consequence they were sometimes mistaken for men. While we cannot assert such a view with certainty nothing can hide the fact that these unexplained events are occurring with greater frequency around the entire world. UFOs are astonishingly angel-like in some their reported appearances.