Is The_Thing an ET monster, or is it just a very adaptive life form? As The_Thing has been depicted in various movies, it is a very aggressive & dangerous organism that is a total predator and mimic.
Several similar or parallel posts are at, TFZ and especially, TDL.
The friendly Extra Terrestrial and the malevolent Alien have been depicted in so many ways.
https://thedigitallabyrinth.blogspot.com/search?q=Alien
Panspermia is a fascinating concept as a natural way for the building-blocks of life to be distributed to a multitude of worlds. https://paranormal-intersection.blogspot.com/search?q=ET , https://thedigitallabyrinth.blogspot.com/search?q=ET , https://desertshapes.blogspot.com/search?q=ET
https://www.sciencedirect.com/topics/earth-and-planetary-sciences/panspermia
https://ui.adsabs.harvard.edu/abs/2019asbi.book..419K/abstract
Of course there have been several Sci-Fi stories about BIG and small things reaching the earth. Several of them are ET+monster stories.
https://en.wikipedia.org/wiki/The_Thing_from_Another_World (1951)https://en.wikipedia.org/wiki/Invasion_of_the_Body_Snatchers (1956)
https://en.wikipedia.org/wiki/The_Andromeda_Strain_(1971_film)
https://en.wikipedia.org/wiki/Horror_Express (1972)
https://en.wikipedia.org/wiki/Invasion_of_the_Body_Snatchers_(1978_film)
https://en.wikipedia.org/wiki/The_Thing_(1982_film)
Prometheus_(2012_film) "There is nothing in the desert..." https://www.youtube.com/watch?v=lrrpenD-Eg0 , https://desertshapes.blogspot.com/search?q=Prometheus , https://desertshapes.blogspot.com/search?q=Frankenstein
So much peculiar symbolism and synchronicity can be found in various books, movies and TV productions.
DS https://desertshapes.blogspot.com/search?q=synchronicity
TDL https://thedigitallabyrinth.blogspot.com/search?q=synchronicity
https://paranormal-intersection.blogspot.com/search?q=Frankenstein
https://paranormal-intersection.blogspot.com/search?q=monsters
https://desertshapes.blogspot.com/search?q=monsters