This weekend, SpaceX began what is slated to be its busiest week ever by successfully launching its largest payload to date: a communications satellite dubbed TelStar 19V. Perched atop the company’s Cape Canaveral launch pad, a shiny new Falcon 9 rocket roared to life at 1:50 am Eastern on Sunday morning, lighting up the predawn sky. It was the 13th launch so far this year for SpaceX—and, notably, the first of three Falcon 9 Block 5 booster launches scheduled for the next 12 days.

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