Many thought that propulsively landing a rocket booster was impossible. Now Falcon 9 does it routinely.
Full vehicle reusability is the next big milestone, and was thought to be impossible. Hopefully #Starship will demonstrate it soon.
Reusability it's the key to making space exploration affordable.
This is why so many space enthusiasts are flocking to Boca Chica to witness and document this historic milestone:
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