At this year's Comic-Con International in San Diego, Marvel Studios president Kevin Feige surprised fans when he announced that the upcoming Captain Marvel film would take place in the '90s, making Carol the Marvel Cinematic Universe's first human hero ahead of Iron Man. Yet, while this revelation confirmed that Carol has been around long before the MCU came to fruition, she's yet to make her cinematic debut. So, where has Earth's mightiest hero been over the course of nearly twenty films? According to Feige, she's been "out there."

During the press junket for Thor: Ragnarok, io9 asked Feige where Carol has been all this time and why we -- and the rest of the MCU -- haven't yet met her. While he couldn't reveal too much, his answer may have given us a clue as to why Carol hasn't made an appearance thus far. “The key is...‘out there,’” he teased, putting his arms in the air.

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As Feige states, the key is "out there," which suggests Carol is in outer space. If she is indeed out exploring the universe, it remains to be seen what brings her back to Earth and how the others respond to her presence.

Filming is expected to kick off on Captain Marvel beginning in January. The movie will shoot in California, rather than Atlanta, Georgia, where Marvel filmed the past few years. As of right now, additional casting for the film has not yet been revealed, outside of confirmation that Samuel L. Jackson will return as Nick Fury in the film.

Directed by Anna Boden and Ryan Fleck from a script by Tomb Raider writer, Geneva Robertson-Dworet, the film stars Brie Larson in the titular role. Captain Marvel arrives March 8, 2019.