The renowned and award-winning planetary scientist, astronomer, astrophysicist, and writer Carl Sagan, known for the award-winning 1980’s television series Cosmos: A Personal Voyage, always advocated for the search for extraterrestrial intelligence. Sagan said, “The universe is a pretty big place. If it's just us, seems like an awful waste of space.” and he questioned, "What is more frightening? The idea of extraterrestrials on strange worlds or the idea that, in this immense universe, we are alone?". He believed that in more than 1 trillion galaxies in the observable universe, and an even larger number of countless planets, it would make no sense for intelligent life to exist in only one small planet called Earth. Studied in the field of Ufology and Exobiology, the Greys are extraterrestrial beings that have as their main features short stature, grayish skin color, large black eyes, thin mouth, and minimal nostrils, a slender body in relation to the size of their large head, and large hands with four long fingers. The Greys are said to have originated from the Zeta Reticuli system in the Reticulum Constellation, about 39 light-years away, and there is evidence that such a species has been operating on Earth for a long time, including the famous incident in Roswell in 1947. Some say that the Greys are interdimensional aliens, and they have been controlling civilizations for centuries, acting as gods and distributing technology.