A space crew take off from Earth on a mission to Mars (I think). As they take off, war breaks out on Earth and they are left with no communication.
English, live action. One guy ejects himself via an airlock - later it shows him surrounded by aliens and he realises he's in a sim.
I figured it out this morning. This is the New Twilight Zone episode Six Degrees of Freedom (2019).
“Six Degrees of Freedom” tells the story of a group of astronauts who have been chosen to lead a mission to Mars. Moments before their launch, though, they receive a radio transmission which suggests that North Korea has just launched nuclear missiles. Now facing the unenviable position of living on a planet devastated by nuclear war, the crew make the difficult decision to head to Mars as planned and deal with whatever may come next.
