Carol Danvers has the ability to travel through time. That's according to Samuel L. Jackson, who revealed that juicy nugget and several other new pieces of info that needs to be unpacked about the upcoming Captain Marvel film and, seemingly, the subsequent Avengers: Endgame.
"She’s pretty much the strongest character - in terms of someone with powers are able to do things - in the Marvel universe," Jackson told Entertainment Tonight. "So, for Carol Danvers to be that person and for Brie to become that person, it's gonna be a dynamite thing. I mean, [the Avengers] are up against some really, really tough odds right now - we saw throughout Infinity War - so now we know that we need something that's as powerful as Thanos."
"And at some point," Jackson added, "we'll find out how powerful she is and all the things that she's capable of. She's one of the few people in the Marvel universe that can time travel, so..."
Time travel's a new ability for Captain Marvel as far as comic books go; the closest thing is her 'Binary' powers which allow her to tap into the energy of a white hole for light speed travel and other cosmic abilities.
If Jackson is correct, and not mistaken or intentionally misdirecting audiences, this opens a whole new realm of possibilities for not only where she's been since the 1990s but how Thanos might be defeated and his snap reversed in Endgame.
Speaking of cosmic abilities, the ET writer mentions that Captain Marvel will apparently feature the Tesseract - the cubic artifact which once held the Space Stone - which Jackson replies "[s]eems like the Tesseract has been the constant in all these movies."
Jackson and ET also seemingly confirm that Goose the Cat is, in fact, a Flerken. In comic books, Carol has a companion Flerken named 'Chewie' which appears to be a tabby cat like Goose. Flerkens are alien creatures that resemble cats, but are vastly different; from the ability to lay eggs, some hidden tentacles, but possibly most importantly, Flerken have a pocket reality inside their bodies which are bubbles of space and time.
Lastly, Jackson casually mentions that there is a scene where he enters a ship "that belonged to a doctor from Carol Danvers' past." The first doctor that comes to mind relating to Carol that would logically have a ship would be Dr. Walter Lawson from comic books - the original Captain Marvel/Mar-Vell's human identity during his time on Earth.
This adds another layer of speculation as to exactly who Jude Law's character is. He's been alternately identified by toyboxes and Disney's official site as Yon-Rogg and Mar-Vell. He's currently identified as Yon-Rogg in a a Hasbro Marvel Legends figure for sale on a Disney site.
Jackson's "Doctor" revelation does nothing to dissuade Newsarama from our theory theory that Law is Yon-Rogg and Captain Marvel and Dr Lawson.