Update: The launch has been postponed until next week.

The launch was postponed until Friday as a result of, what is reported to be, "a tiny glitch in the motion of an upper stage engine actuator," as SpaceX CEO Elon Musk tweeted.

Previously: This evening, SpaceX will attempt its fifth rocket launch of the year. The company's Falcon 9 rocket will deliver THAICOM 8, a commercial communications satellite for Thaicom to geostationary transfer orbit (GTO). GTO is a high-elliptical orbit. And when we say "high," we mean high. It is more than 32,000 km (20,000 miles) above the Earth.

Liftoff is scheduled for liftoff at 5:40PM ET, and you can watch the live stream below:

Once the Falcon 9 is well on its way, the rocket's engines and main fuel tank will separate and head back to Earth. SpaceX will once again attempt to land this stage on an autonomous drone ship in the Atlantic Ocean.

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