Tags: asgard, atmosphere, avengers, avengers 4, avengers endgame, avengers infinity war, captain america, dr simon clark, earth science, eclipse, endgame, exoplanet, guardians of the galaxy, guardians of the galaxy 2, infinity war, iron man, marvel, marvel cinematic universe, marvel movies, marvel studios, MCU, movies, mustafar, nasa, phd, planets, sakaar, science, simon clark, simonoxfphys, space, space documentary, Star Wars, steve rogers, thanos, thor, thor ragnarok, tony stark, vormir
Which MCU Planets Could Really Exist?
