Watch the Falcon 9 launch from pad 39A

SpaceX scrubbed the first test launch of its huge new rocket Monday due to a frozen valve in the pressurization system on the 33-engine Super Heavy booster, delaying the widely-anticipated flight from South Texas until at least Thursday.

The move not only allows SpaceX to increase its allowed launches at pad 40 from 50 to 120, but it also permits the Texas-based company to construct a new landing site adjacent to the launch pad.

The launch of the SES O3b mPOWER satellites a day after the Transporter-9 rideshare mission from California. The Boeing-built O3b mPOWER 5&6 satellites launched from Space Launch Complex 40 (SLC-40) at the start of the 89-minute window that opened at 4:08 p.m. EST (2108 UTC).