"Terrence's Voyage of Time is an incredibly beautiful and unique experiential IMAX film for children and families chronicling the birth of time," he said in a statement.
"I'm very grateful to be part of such a fascinating and educational project, but I’m currently focused on my family situation and don’t want to distract attention away from this extraordinary film, which I encourage everyone to see."
Pitt serves as the narrator of the documentary.
Brad Pitt and Angelina Jolie
Jolie, 41, filed for divorce from Pitt, 52, in a Los Angeles court Sept. 19, stating that she separated from the Allied star on September 15 – just one day after the couple and son Maddox, 15, were involved in an alleged altercation aboard their private plane.