"Interstellar" contains multitudes. It's a science-fiction epic. It's a drama about a father's love. It's a huge piece of special-effects eye-candy. It's a trippy mindbender. It's "2001: A Space Odyssey" - with a heart.
(And depending on your point of view that is either the money blurb for the movie poster or a horrendous bit of blasphemy.)