THE FINAL COUNTDOWN: Watch the SpaceX Falcon Heavy Rocket Launch Today.

The Falcon Heavy rocket is essentially a turbocharged version of SpaceX’s workhorse Falcon 9 rocket. It is the same height and its central booster looks the same. But attached on the sides are two additional Falcon 9 boosters, which triples the thrust at liftoff. That means that the Heavy will be able to lift far heavier payloads, up to 140,000 pounds, to low-Earth orbit.

The rocket is sitting on Pad 39A at the Kennedy Space Center in Florida. That’s the same starting point of some of NASA’s most famous achievements, including Apollo 11 in 1969, the first mission that took astronauts to the moon, and the first space shuttle launch in 1981.

SpaceX will broadcast the launch on its website, spacex.com, beginning at 1:10 p.m. Eastern, and on YouTube. We’ll add the live video feed to this page once it becomes available.

That’s just under an hour from now…