What constitutes 'hardcore' science fiction and why is it needed? 

There is great science fiction out the from Metropolis to Blade Runner 2049. But what makes a science fiction film hardcore science fiction? One could argue that the science is more of the cornerstone of the story or that it's more deeply rooted in 'realistic' science. 

Besides just hardcore sci-fi, we also talk our favorite science fiction films in general and why we're drawn to the genre. We also catch everyone up on what we've been watching.

What are some of your favorite hardcore sci-fi films?