It was the booster utilised to supply NASA astronauts to the ISS in May perhaps.
The 229-foot-tall (70-meter) rocket is poised for launch from pad 40 at Cape Canaveral Air Force Station in Florida during a launch window Monday opening at 5 p.m. EDT (2100 GMT) and closing at 8:55 p.m. EDT (0055 GMT). SpaceX reported prosperous deployment of the satellite into orbit.
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SpaceX's Falcon 9 rocket is the only launch vehicle in the world that features a reusable first-stage booster.
The Falcon 9 rocket being used for this mission includes a first-stage booster that flew previously on SpaceX and NASA's Demo-2 mission - the historic mission that carried astronauts on board a SpaceX rocket for the first time ever. So it has some background. The 51-day turnaround time broke the company's record for the re-use of a rocket stage.
The large communications satellite was launched on behalf of Lockheed Martin and its client, South Korea. The launch had originally been planned for last week, but had to be delayed so the company could "take a closer look at the second stage" and "swap hardware if needed".
The payload, Anasis-II, is South Korea's first military communications satellite. Since of its use in the military services, there is certainly not a lot of information about it, other than that it really is primarily based off the Eurostar E3000 satellite bus, according to the Day-to-day Astronaut. The spacecraft is the first dedicated South Korean military communications satellite.
Seven minutes prior to launch, the nine Merlin 1D engines on the first stage begin thermal conditioning in order to prevent thermal shock from the super cold propellants. "Gods are with us to pave a path towards the heavens", he claimed in an on the internet broadcast, thrusting his suitable arm into the air. One minute before liftoff, Falcon 9's onboard computers startup, taking control of the countdown and beginning to pressurize propellant tanks to flight pressures.
DAPA earlier said the satellite was forecast to separate from the rocket 32 minutes after launch at an altitude of about 630 kilometers above the equator and will try to make contact with the Toulouse Space Operations Center in the French city of Toulouse 18 minutes later. You can relive the launch underneath.