Timeline milestone
A recovered Falcon 9 booster flies again
From SpaceX and the New Commercial Space Race: From Falcon 1 to Starship
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Reusability
A recovered Falcon 9 booster flies again
The SES-10 mission reused an orbital-class first stage and landed it again after launch.
Reflight moved reusability from landing demonstrations toward an operational business model. Savings depend on refurbishment, inspection, launch cadence and mission requirements, so the cost effect cannot be inferred from reuse alone.Sources & references 1 source
