For some Avengers, space seemed like no big deal. Rocket Raccoon, for instance, spouted some snarky lines when the human Avengers took a deep space trip for the first time like little kids.

Jeremy Renner, Don Cheadle, Robert Downey Jr., Chris Evans, Karen Gillan, the character Rocket, voiced by Bradley Cooper, Paul Rudd and Scarlett Johansson in a scene from “Avengers: Endgame.” ...