If you aren't looking for a documentary, you might be thinking of these speed-related or character-driven episodes:
It covers the launch of the most powerful rocket ever built, the Space Launch System (SLS), and the Orion capsule's journey around the moon. [S1E7] Godspeed
Titled "Godspeed" , this episode reveals the origin story of the speedster villain August Heart (Godspeed) and is directed by Danielle Panabaker. If you aren't looking for a documentary, you
While the episode title is "Godspeed," the feature focuses on Simone's volunteer efforts and Damon's search for the truth about his father's past. the Space Launch System (SLS)