Video: SpaceX conducts hotfire test for next Falcon 9 launch

Video credit: William Harwood/CBS News

SpaceX ran a Falcon 9 rocket through a series of pre-flight checks Monday, culminating in a hold-down engine firing ahead of a planned launch Saturday with a communications satellite for SES and EchoStar.

The two-stage rocket, featuring a previously-flown first stage booster, fired its nine Merlin 1D main engines for several seconds at 4:30 p.m. EDT (2030 GMT). The engines throttled up to full power, generating around 1.7 million pounds of thrust, while the rocket remained firmly on the ground.

The Falcon 9 rocket is set to launch Saturday with the commercial SES 11/EchoStar 105 communications satellite.

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