In director Johan Renck’s science fiction fantasy “Spaceman,” adapted from Jaroslav Kalfař’s 2017 novel Spaceman of Bohemia, viewers are taken on a philosophical journey into the depths of one man’s self-inflicted loneliness that manifests as a nightmarish friendship with a giant space spider. It takes a lot of guts to attempt a screen adaptation of such an abstract story, but Renck pulls it off, mostly with the help of a strong lead performance from Adam Sandler. Dubbed “the loneliest man in the world,” Jakub (Sandler) is six months into a solitary mission to investigate a mysterious pheno...