Less than nine minutes later, the rocket’s first stage booster fell from the sky and executed a pinpoint propulsive landing just offshore, setting the stage for another resupply mission for NASA using the same rocket this summer using the same vehicle.
The 213-foot-tall (65-meter) rocket lifted off with a flash from its nine Merlin 1D main engines at 2:48:58 a.m. EDT (0648:58 GMT), roughly the moment Cape Canaveral rotated under space station’s orbital plane.
The Falcon 9 tilted toward the northeast to align with the space station’s flight path, riding 1.7 million pounds of thrust as roared into a starry sky. Less than two-and-a-half minutes later, the rocket’s first stage booster shut down and separated to begin a descent back to Earth, targeting SpaceX’s drone ship “Of Course I Still Love You” parked around 14 miles (22 kilometers) east of Cape Canaveral in the Atlantic Ocean.
The first stage lit three of its engines to begin a boost-back burn to reverse course and head back toward Florida’s Space Coast, while the Falcon 9’s upper stage continued with the primary objective of Saturday’s mission — the delivery into orbit of a Dragon cargo craft packed with 5,472 pounds (2,482 kilograms) of supplies, provisions and experiments for the station and its six-person crew.
The interaction exhaust plumes from the Falcon 9’s first and second stage Merlin engines produced a spectacular lighting effect, giving the appearance of a cosmic nebula high above the Florida spaceport.