<p>The stars of The Tomorrow War have revealed how they got to grips with some of the scientific jargon in the movie's script.</p><p>Director Chris McKay's film follows present day humans who are conscripted to travel forwards in time to take part in a war against a terrifying alien race which has almost wiped out the world's population.</p><p>The Tomorrow War will stream exclusively on Amazon Prime Video from 2 July.</p>
