It would also have carried two satellites from BlackSky, a SpaceX customer through the private firm Spaceflight.
Saturday's mission would have marked the third SpaceX Starlink satellite launch in less than two months.
In April, SpaceX announced a series of updates, pledging to make the new batch of satellites "invisible to the naked eye within a week of launch" and darkening the satellites "so they do not saturate observatory detectors." The company added that by June, all future Starlink satellites will have "sun visors" that will block sunlight from hitting the brightest parts of the spacecrafts
In a statement ahead of the scheduled launch, SpaceX confirmed that "all Starlink satellites on this flight are equipped with a deployable visor to block sunlight from hitting the brightest spots of the spacecraft -- a measure SpaceX has taken as part of our work with leading astronomical groups to mitigate satellite reflectivity."
Saturday's canceled mission also comes on the heels of the private space firm's first manned launch in late May, when SpaceX teamed up with NASA to send astronauts Doug Hurley and Bob Behnken to the International Space Station
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