Director James Gray’s Ad Astra, apart from being beautiful to look at (down in front, Brad Pitt fans!), also sets out to be that rare, beautiful thing: a sci-fi movie of ideas. It is interested in outer space as much as the universe inside the metaphorical man in the moon. If only it trusted those ideas to speak to its audience loudly enough, because then it might not have felt the need to spell them all out in explicit, clunky voiceover.
