“Mars is just a tiny dot in the sky,” Strong says in the opening moments, but that doesn’t stop him from wanting to boldly go where no man has gone before: “I’m not going there to die. READ MORE: Mark Strong on Playing the Same Character Twice in ‘Low Winter Sun’ and Not Using Detroit for ‘Ruin Porn’ Stanaforth, an astronaut headed to the Red Planet as tends to be the case in stories about the final frontier, however, complications arise en route. Mark Strong has proven a reliable supporting player in any number of high-profile films, from “Syriana” and “Sherlock Holmes” to “Tinker Tailor Soldier Spy.” The English actor gets perhaps his most prominent leading role yet in writer/director Mark Elijah Rosenberg’s “ Approaching the Unknown,” the first trailer for which premiered today.