DO YOUR RESEARCH - Stargate
Stargate was inflicted on the world in the 90s. I loved it, I loved every second. My interests at the time were aliens, sci-fi in general, ancient Egypt, and stuff that intersected with all of those. Not too much has changed, other than the ancient Egypt thing. I'm still a fan, just much more casually.
This movie is actually really bad. I don't want to get too far into the deconstruction, partially because it annoyed me so badly I don't trust myself to be straightforward and not hyperbolic. Also, though, it really did mean a lot to me as a kid. I'm okay with the bias this reveals, and maybe it will actually help me take a look at where the story works, and how/why, as well as calmly investigate where it fails.
One of the failings was too egregious to let pass in silence. That screenshot up there shows an actual frame of film from the completed product. The characters are returning to where the Stargate is housed on the alien planet they're visiting, and we're shown this. Correct, that is a planet in another galaxy, literally only accessible to us through an Einstein-Rosen Bridge, and yet! It has three moons which are very obviously our own moon, one of them a little bigger, and another reversed to...trick us?
This might not even fall into the realm of research as much as funding/production. And this is not special knowledge. You don't have to be a space enthusiast, a sci-fi nerd, or even a particularly detail-oriented person to be like "Oh good lord, that's literally the EXACT SAME MOON three times, and I know because, hey, there it is right outside my own window!" Failing to maintain the fragile confines of a fictional world is one of my biggest pet peeves. DO NOT remind me I'm engaging in make believe unless you want me to root myself in the real world to benefit your storytelling, somehow (it's possible).