How exactly does time work in 'Avengers: Endgame'?

4:00am PDT - April 27th, 2019    guardians of the galaxy - Mashable

Warning: MAJOR spoilers for Avengers: Endgame below. Time travel can save the fate of the Marvel Cinematic Universe, and make your brain throb worse than a hammer to the head all at the same time! Leading up to the epic release of Avengers: Endgame, plenty of…