Not only have numerous extraterrestrial races been involved with Earth over a period of many millions of years, but we have extraterrestrial DNA and many of us lived numerous extraterrestrial lifetimes, before we started reincarnating here, often on rescue missions, to help raise the frequency here and elevate mankind.
Apparently, some science "fiction" writers and people involved with science "fiction", which isn't always strictly fiction, intended to stimulate our subconscious awareness of extraterrestrial past lifetimes, into conscious awareness. Frank Herbert, with an IQ of 190, according to his son, Brian Herbert, seemed to be doing just that, with his basically true 6-book science "fiction" Dune series. I felt like I was identifying some of us in the characters of the Dune story and that some of the characters in the beginning of the 6-book Dune story were reincarnated in the middle of the Dune story and again near the end, as the entire 6-book story, encompasses a few thousand years in future parts of the Milky Way's Spiral Time Streams.
On top of that, another science fiction writer, L. Ron Hubbard, mirrored the 6-book Dune story in numerous ways, with his 10-book Mission Earth series, published in the mid 1980s, years after Dune was published. It seems possible that Frank Herbert was a ghost writer for Hubbard, when he wrote Dune.
Most likely, they both knew that Dune was basically a true story and collaborated in their intentions to stimulate our subconscious memories of extraterrestrial past lifetimes, into conscious awareness. It's even possible that Herbert and Hubbard were parts of the same consciousness, as consciousnesses can sometimes split and merge. Both of them were probably aware of that.
Herbert did serve on Hubbard's Writers of the Future contest, before they both passed away in 1986.
It's notable if Herbert had an IQ of 190, higher than most physicists. Speaking of physicists, Stephen Hawking, with his enhanced mind and deformed body, is an ideal candidate for having lived an extraterrestrial past lifetime, as one of the Space Guild Pilots of Dune, who obtained their enhanced minds and deformed bodies, by their excessive use of the spice melange, which enabled them to maneuver the vast Heighliners through deep space, by the power of their minds. So far, the Dune movies haven't gone past the first book, of the 6-book series. Perhaps in the future they will. If so, I hope they stick to the story line and begin to gain some insight about the reality they are portraying, as it pertains to us.