The first Global Positioning System 3 satellite of the Global Positioning System 3 constellation, which is known as Vespucci, has been built up by Lockheed Martin and would be taken to space by the rocket, SpaceX Falcon 9.
The first to drop off the schedule board was the Arianespace Soyuz rocket, which was delayed to Wednesday due to high-altitude winds above its launch site at the Centre Spatial Guyanais in the French Guiana.
The goal is to set up a command to oversee and organize space operations, accelerate technical advances and find more effective ways to defend US assets in space, including the vast constellations of satellites that American forces rely on for navigation, communications and surveillance.
The new GPS III satellites are created to be three times more accurate than the current system, which went into civilian operation in the 1990s.
"GPS OCX launch and checkout system will command the satellite to execute key maneuvers, including controlling the burns to get the satellite into desired orbit", said Bishi Das, Raytheon GPS OCX launch and checkout system director. The launch window then begins at 9:07 A.M Eastern.
Originally, today, SpaceX, Blue Origin, Arianespace, and ULA were supposed to launch their respective rockets.
If all the rockets now scheduled launch as planned, there could be five launches within a 24 hour period. The company hopes to move forward with both on Wednesday, December 19, and that means you still have a chance to watch them take off live. On August 20, the satellite was brought to Cape Canaveral through a huge aircraft Air Force C-17. It's the most cyber secure space system in the U.S. Department of Defense.
Of course, if the Delta IV Heavy scrubs on Tuesday evening, it likely would roll over 24 hours, so we still could have the potential for five launches in 24 hours.
Meanwhile Bezos' mission was due to launch shortly after, at 2.30pm, but has also been scrapped until tomorrow because of a "ground infrastructure issue".