Prometheus 2 seems to be gaining speed, with Jack Paglen now in discussions to write the sequel.
Damon Lindelof, who penned the first film with Jon Spaihts, revealed earlier this year that he had chosen not to return to write the sequel.
Michael Fassbender and Noomi Rapace are expected to return in their starring roles as David and Dr Elizabeth Shaw respectively. It has not been confirmed if Ridley will return to the director's chair, although he will continue to produce through his Scott Free Productions company.
20th Century Fox is targeting a 2014 or 2015 release date for Prometheus 2.
The 2012 film, which made over 400 million US dollars worldwide, is loosely created as a prequel to Ridley's Alien and followed a team of explorers trying to save the future of the human race from aliens.
Ridley previously told Movies.com: "From the very beginning, I was working from a premise that lent itself to a sequel. I really don't want to meet God in the first one. I want to leave it open to [Elizabeth Shaw] saying, 'I don't want to go back to where I came from. I want to go where they came from'.
"If we've opened up this door - which I hope we have because I certainly would like to do another one - I'd love to explore where the hell she goes next and what does she do when she gets there..." he added.