RT
@XFreeze: Elon Musk perfectly explains why fully reusable orbital rockets are insanely hard to build Our Earth has quite strong gravity and thick atmosphere. With known physics, building a fully reusable orbital rocket is only barely possible "If this was a video game, the setting is 'Extreme Difficulty.' Not impossible, but extreme difficulty" Because the physics are so unforgiving, everything has to be perfect. You can't just have a "good" rocket You need: • Exceptionally efficient engines • An incredibly optimized, lightweight structure • Advanced avionics and software • A revolutionary, ultra-light heat shield for orbital reentry There is zero margin for error. This is why making life multi-planetary is the hardest engineering challenge in human history