You mean the Annunaki? Ancient Aliens distorted the real meaning of the term Annunaki in their show calling it "those who came from the sky". ANnunaki means "royal blood", "princely offspring". Ang ilang inspiration sa meaning sa Ancient Aliens is taken from Zechariah Sitchin's books in the 1970's about...

....ancient aliens.
As for the 'gods' not all of them come from the sky, Enlil was the sky god some come from the water like Enki. It is very common among myths to have nature gods to represent certain elements. In ancient aliens they just put them all as "from the sky" to make it sound like they're from spaceships from other planets.
Dili nalang ko mu refute ani kay mas nindot pag-explain ani na video.
Ancient Nuclear Warfare debunked.
Ancient Aliens is not a good place to start researching about the past. I recommend studying ancient history and mythology, or religion first because Ancient Aliens will only cloud people's minds to the facts. I used to believe in this stuff before, until I did an HONEST research.