I just watched the new Ninja Turtles movie yesterday. It was about opening up spacetime portals. Did anyone notice so many new movies and even tv series have themes about portals between two parallel spacetime? Thor has it. Iron Man has it. Captain America. The TV series The Flash has it and also Marvels Agents of Shield. Or maybe it's mostly related to Marvel theme movies or tv series? What is the more scientific term for it. Is it called Interbrane portals or just spacetime portals? In all the movies.. you need keys to open up the portals.. it can't just opened up like what they do by default at the Large Hadron Collider when they failed to find hidden dimensions. What other good movies (non Marvel) have themes about spacetime portals and creating bridgeway between them? I know Event Horizon movie has it. They tried to open some portals and got an access to hellish creatures. Wished when they created the X-files series. They should have explored this theme about atomic tests in the 1940s opening up portals and making the grey and reptilians accessed our dimensions. What sci-fi movies have this? This will be very interested theme. The best sci-fi movies are those that are realistic and possible.