Director Ridley Scott has been openly discussing the follow-up to his sci-fi thriller Prometheus, a prequel to the hit Alien franchise, since its release in 2012. Last year (15), Scott confirmed the only returning cast member was Michael Fassbender - leaving many fans confused as Noomi's character also survived in Prometheus.

The Girl with the Dragon Tattoo actress played Dr. Elizabeth Shaw, who was last seen escaping the aliens by flying off in a ship set for an unknown location with droid David, played by Michael.

It has now been reported that Noomi is back on board. She has been spotted filming scenes for the movie in Australia, where production began in February (16). Her character's involvement in the sequel is being kept firmly under wraps.

She joins franchise newcomers Billy Crudup, Katherine Waterston and Danny MCBride, who play a crew on board the colony ship Covenant who believe they have discovered new remote territory, but then come across David. The movie is set for release in August, 2017.

Another Alien sequel is also in the works, with District 9 director Neill Blomkamp set to direct, with Ridley producing. The project was shelved last year (15) and is set to resume production once Alien: Covenant is released in August, 2017.

Sigourney Weaver, who played Ellen Ripley in the franchise between 1979 and 1997, has signed on to reprise her role and previously told fans at an event in April (16) it would be "worth the wait".

"Ridley asked Neill not to make our Alien until after Prometheus 2," Sigourney said. "He (Ridley) wanted his movie to shoot and be released first. But it's (the new Alien film) an amazing script, and Neill and I are really excited about doing it...