So, yeah, apparently a lot of folks don't know about this website. Didn't want to put it on the link because I wanted to briefly explain: I use duckduckgo and put a !justwatch after any movie or show I want to know on which service it is available.
But basically, go there, search for what you want to watch, and it'll tell you where it's available (if it is), and for how much!

After re-watching the absolute masterpiece Close Encounters of the Third Kind (Spielberg, 1977), I was in awe. This got me thinking a lot about aliens, and it seems to me that that is an area where movies and TV shows have been lacking in recent years.

When I say "aliens", I mean something truly alien, foreign, mind-bending, even terrifying (although I'm not very fond of horror) -- so not the tame, often humanoid extraterrestrials that we fully understand, like you usually see in Star Trek and Trek-like shows. But rather stories of contact that make us rethink the boundaries of existence.

A recent movie that touches on that was 2016's Arrival, which has more than one similarity with Close Encounters.... Another is Contact (Robert Zemeckis, 1997).