Why did SLS take so long to fly?

NASA's SLS rocket is FINALLY here! But what's taken it so long to fly? I cover that very topic in today's video! hope you enjoy! Socials: Twitter:   / davidwillissls​   Discord:   / discord   Insta:   / david_willi.  . Credits: NASA Music: Mood Rebirth Dramatic orchestral Fallen Kingdom In Dreams Intro (0:00) SLS beginnings (0:54) SLS design (2:01) SLS vs STS (3:22) SLS STAs (4:13) Weld Pin change (5:29) Tornado/Lox Dome drop (6:54) Covid 19/Greenrun (9:07) KSC Ops (11:25) Why has SLS taken so long? (12:55) Outro (14:27) #SpaceLaunchSystem #Artemis #NASA