JASON CLARKE is in talks to join the growing cast of “First Man,” the Neil Armstrong biopic that will reteam “La La Land” director Damien Chazelle and Ryan Gosling.

The movie is casting up ahead of a fall start, with Kyle Chandler closing a deal and Corey Stoll in talks to join the crew as well.

Written by Josh Singer, the drama is described by Universal as a visceral, first-person account of NASA’s mission to land a man on the moon, focusing on the years 1961-1969 and Armstrong, the astronaut who became the first man to set foot on the moon. Based on the book by James R. Hansen, the movie will explore the sacrifices and the cost — on Armstrong and on the nation — of one of the most dangerous missions in history.

Gosling is playing Armstrong, Chandler will portray test pilot Deke Slayton and Stoll will play astronaut Buzz Aldrin.

If a deal is made, Clarke will play Ed White, the first American to walk in space, who later died in an Apollo mission testing accident.

DreamWorks Pictures is co-financing the film.(SD-Agencies)