The Marvel family is very good at creating curiosity in the fan community by giving small information surrounding characters or vaguely supporting the theories they make.

Since then, fans have always wondered one question: `Where has Captain Marvel been?`

Captain Marvel is adventuring in outer space?

Many people believe that Captain Marvel has been in space since her first solo film ended and that Carol only returned when Nick Fury really needed her help.

But this theory is unreasonable, as to why Nick Fury didn’t call Captain Marvel earlier because no matter what planet she is on, she can appear almost immediately on Earth.

Captain Marvel is exploring inside the Quantum Realm

There is a small possibility that Captain Marvel has been in the Quantum Realm the entire time.

The deeper you go into the Quantum Realm, the smaller the object becomes and it seems that the impact of real time and space is less.

It seems that the story of the Quantum Realm will continue in Captain Marvel because in 2017, the studio invited Dr. Spiros Michalakis – a quantum physicist to be a consultant for upcoming films and he confirmed.

In 2006, Captain Marvel co-writer Nicole Perlman revealed that they had to revise the script quite significantly because the studio believed that the character’s origin was quite similar to DC’s Green Lantern and they did not want to follow in the same footsteps.

Besides, comic book fans already know the close relationship between Captain Marvel and the Kree species – This species has had experiments related to quantum energy.