http://www.openminds.tv/presentation-steven-spielberg-ufologist/42644
Close_Encounters_of_the_Third_Kind is considered to be one of the best ET contact movies ever made.
https://en.wikipedia.org/wiki/Close_Encounters_of_the_Third_Kind#Plot
There are some very intentional artifacts or mini-models on the big ship model. https://en.wikipedia.org/wiki/Close_Encounters_of_the_Third_Kind#Visual_effects
https://airandspace.si.edu/collection-objects/mother-ship-model/nasm_A19790906000 (JAWS) (R2-D2) (Tie)
{"Teaming up with Star Wars’ George Lucas for Raiders of the Lost Ark, Spielberg couldn’t resist a nod to Lucas’s iconic sci-fi movie by including a set of “ancient” hieroglyphs depicting none other than loveable droids C-3PO and R2-D2. The pair can be seen over Indiana Jones’s right shoulder during the scene in which he removes the ark from the Well of Souls."} https://www.standard.co.uk/go/london/film/five-pop-culture-easter-eggs-from-steven-spielberg-s-career-a3802006.html
https://www.ancient-origins.net/ancient-technology/abydos-carvings-0080
https://www.atlasobscura.com/places/helicopter-hieroglyphs
https://en.wikipedia.org/wiki/Helicopter_hieroglyphs
https://en.wikipedia.org/wiki/Out-of-place_artifact
https://www.ancient-origins.net/ancient-technology
Officially, intelligent ET life and Time Travel don't exist from a contemporary earth perspective.
However, intelligent life in the universe might have already been around for the equivalent of millions or even billions of years. Earth might have been visited & manipulated many times.
