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.

Blue Origin could try again to send up its New Glenn rocket for the first time with an overnight launch early Thursday, but the weather forecast could pose problems. The heavy-lift rocket for Jeff Bezos’ company is trying to become a competitor for SpaceX and United Launch Alliance.