New Glenn, a massive heavy-payload Blue Origin rocket, had its launch window moved back at least a couple of days.

A rocket is expected to be launched at a launchpad in Florida that has been inactive for almost two decades. A new rocket about 98 meters long, developed by Blue Origin, is being prepared for the first flight,

The company, owned by the Amazon founder Jeff Bezos, also received approval from the Federal Aviation Administration to launch the vehicle to orbit.

Beachside spectators have monitored the rocket and Launch Complex 36 pre-launch activities on the horizon for weeks, including a Dec. 27 hot-fire test.

Standing over 320 feet tall, it dwarfs the SpaceX's 230-foot Falcon 9 rocket, featuring a 23-foot diameter payload fairing designed to handle massive payloads — twice the volume of typical commercial rockets in its class.

A Blue Origin New Glenn test rocket was upended on the pad for the first time in February at Launch Complex 36 at Cape Canaveral Space Force Station. Mission: Blue Origin will launch its powerhouse New Glenn rocket from Cape Canaveral Space Force Station. This first launch will send NASA's ESCAPADE mission to Mars. Location: Launch Complex 36.

Blue Origin put its orbital-class New Glenn rocket through its last major test in preparation for the rocket's first-ever launch.

Nearly 25 years after Jeff Bezos founded Blue Origin, the company is finally poised to send its first rocket to orbit. New Glenn could lift off as early as next week.