The successful launch of Blue Origin’s massive new rocket is a key step that may allow the company to compete with Elon Musk’s SpaceX.

Blue Origin will try again to launch its massive new rocket as early as Thursday after calling off the debut launch because of ice buildup in critical plumbing. The 320-foot (98-meter) New Glenn rocket was supposed to blast off before dawn Monday with a prototype satellite.

The scheduled Sunday launch could mark a new phase in competition in the commercial space market, and pave the way for the deployment of Amazon's Kuiper satellite network.