Space drama Very first Man", which appears at the mission of U.S. astronaut Neil Armstrong to turn out to be the very first man to stroll on the moon, will open this year's Venice Film Festival, organizers said on Thursday. Ryan Gosling leads a cast that Claire Foy as Neil's wife, Janet Armstrong, Pablo Schreiber as astronaut Jim Lovell, Kyle Chandler as Deke Slayton, NASA's Director of Flight Crew Operations, and Ethan Embry as NASA astronaut Pete Conrad, who became the third man to walk on the moon in the Apollo 12 mission.