Most fans think that Thanos' snap in Avengers: Infinity War will be undone in Avengers: Endgame, but there's disagreement as to how the titular superhero team might go on to defeat the Mad Titan and bring back our deceased heroes.

One prominent theory is that time travel will play a role in Endgame. These theories often posit that the snap will be undone entirely by going back in time and preventing it. Many think that time travel will be made possible by Scott Lang/Ant-Man and his Quantum Tunnel. Before getting snapped out of existence, Janet Van Dyne remarked that Scott should avoid "Time Vortexes," which seems like a clear indication that time travel could plyay some kind of role.

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There are a number of other theories about how the snap might be undone. Check out the video below for more details on how Endgame could deal with Thanos' snap.

Although it's not clear exactly how the snap will be undone, it seems pretty clear that those who were dusted at the end of Infinity War won't stay dead for long. Fans have already seen the first trailer for Spider-Man: Far From Home, and there are currently plans for sequels to Doctor Strange and Black Panther. Considering that key characters from those movies didn't survive Infinity War, the snap will have to be undone in someway.

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Directed by Joe and Anthony Russo, Avengers: Endgame stars Robert Downey Jr., Josh Brolin, Mark Ruffalo, Tom Hiddleston, Chris Evans, Chris Hemsworth, Jeremy Renner, Chris Pratt, Elizabeth Olsen, Chadwick Boseman, Sebastian Stan, Benedict Cumberbatch, Paul Bettany, Samuel L. Jackson, Cobie Smulders, Benedict Wong, Zoe Saldana, Karen Gillan, Vin Diesel, Dave Bautista, Pom Klementieff, Scarlett Johansson, Tom Holland and Anthony Mackie. The film arrives April 26.