Update (1100ET):

The Boeing CST-100 Starliner finally lifted off from NASA's Kennedy Space Center in Florida and is en route to the International Space Station. 

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The third time may be the charm.

No one knows for sure, as the Boeing CST-100 Starliner launch was first scrubbed last month due to a leak, and the most recent attempt on Saturday was canceled because of a computer glitch.

Let's hope this time around, the Starliner, seven years behind schedule and more than a billion-dollar cost overrun, will experience no more technical mishaps on its long-delayed space taxi flight with the vehicle's first crewed mission from NASA's Kennedy Space Center in Florida, atop an Atlas V rocket from the Boeing-Lockheed Martin joint venture United Launch Alliance, to the International Space Station. 

Two veteran astronauts - Sunita "Suni" Williams and Barry "Butch" Wilmore - will be inside the Starliner. Launch time from Kennedy Space Center is expected around 10:52 ET. 

Meanwhile, all eyes are on Thursday's SpaceX's Starship Flight 4 test mission.