Just because something is sci-fi, does it
have to have massive explosions, space-chases etc?
Yes,
Moon is gentle, almost theatre-like in its presentation, but it's beautifully shot and acted (Sam Rockwell deserves an Oscar-nod, IMO), and I felt very thought-provoking.
I love a good action movie - set in space or not - but it's good to have a change of pace occasionally!