Last summer, Natalie Portman explicitly said that she was "done" with Marvel - but now she's hinting she could still reprise her role as Thor's love interest Jane Foster.
"Yeah, well hopefully, one day I figure it out," Portman said.
Portman, who is expecting her second child with husband Benjamin Millepied, is keen to return to the role because she finds filming with such extensive visual effects "really challenging".
"It is really an incredible thing to get to be part of. As an actor, it is like a completely different scale. Because when you are making those movies you are working with so much blue screen and so much fantasy, your imagination has to be so much larger. It is really challenging for me that and I don't feel like I have gotten it yet," she said.
"I don't feel like I have understood it yet. It is something that I'm fascinated by, because I'm really challenged by it more than anything almost," Portman added.
Fans of Portman will next see her in ‘Jackie’, a drama about Jaqueline Kennedy, in the days following the assassination of her husband, US President John F Kennedy, in 1963.