Blue Origin LLC’s new flagship rocket lifted off for the first time and successfully reached orbit in a crucial test of the Jeff Bezos-backed firm’s ability to challenge SpaceX’s ironclad grip on the launch market.

The company, started by the Amazon founder Jeff Bezos, reset its countdown clock repeatedly over a period of just over two hours before eventually postponing the test flight to another day.

Blue Origin will try, try again to launch its heavy-lift New Glenn rocket to orbit for the first time — if the Florida weather cooperates.