The Marvel epic saw two of the four original Avengers die sacrificially to defeat Thanos and resurrect half the universe. But since the deaths of Iron Man and Black Widow, fans have wondered if they could have been saved by going back in time to before they died. The common response – including the one seen after Black Widow’s end – is that it’s impossible because their deaths were needed for Nat to obtain the Soul Stone and for Tony to defeat Thanos. However, the version of time travel introduced in Avengers Endgame does actually offer a way to bring Iron Man and Black Widow back – and the key is Gamora.
Avengers Infinity War saw Gamora sacrificed by Thanos for the Soul Stone in 2018, but a 2014 version of her ended up in 2023 at the end of Endgame alive.
This isn’t simply a past version of Gamora, but an alternate her from a new timeline.
Remember, Hulk said real-time travel isn’t like Back to the Future, you cannot change the past.
Instead, when the Avengers travelled back in time via the Quantum Realm, it created a new copy of their past where they can create a new future without alternating the one they came from. Simply put, Endgame’s time travel is best understood as multiverse travel: the
