SpaceX will launch the remains of 152 people along with 24 satellites

The DSX experiment is part of the Falcon Heavy's STP-2 payload. Image Credit SpaceX

The DSX experiment is part of the Falcon Heavy’s STP-2 payload. Image Credit SpaceX

The rocket is set to deploy satellites in three different orbits.

Also on board for the STP-2 mission: small portions of the cremated remains of 152 space enthusiasts being sent into orbit by their families through Celestis Memorial Spaceflights, a company that provides launch opportunities for clients who opt for burials in space and what the firm's website describes as "a uniquely compelling memorial experience".

- SpaceX is getting ready for another historic launch on the Space Coast.

The Falcon Heavy launch is happening at 11:30 pm EDT and has a four-hour launch window in case of weather delays.

Us company SpaceX on pad 39A at Kennedy Space center (USA) conducted a "rapid" test firing of the Merlin engines 1D super-heavy rocket, the Falcon Heavy, according to Teslarati.

"The STP-2 mission will be among the most challenging launches in SpaceX history, with four separate upper-stage engine burns, three separate deployment orbits, a finalpropulsive passivation maneuver and a total mission duration of over six hours", according to SpaceX. The rocket will convey a few payloads for NASA and the Air Force.

For this SpaceX's STP-2 mission, Celestis purchased room aboard the Orbital Test Bed satellite.

Then on July 25, a United Launch Alliance Delta IV Medium rocket is scheduled to carry an Air Force global positioning satellite into space.

The STP-2 payloads are assembled from a host of mission partners including the National Oceanic and Atmospheric Administration (NOAA), the National Aeronautics and Space Administration, DoD research laboratories, and university research projects.

The Deep Space Atomic Clock (DSAC) is a step forward for NASA's spacecraft guidance systems. Other satellites will gather data about how spacecraft withstand the hazards of space and about charged particles streaming off the sun. The launch and all associated coverage will be available live on NASA's YouTube channel as well as SpaceX's channel.

The two side booster rockets that were used in the April mission will be re-used in Monday's launch.

The Air Force announced that it had selected the Falcon Heavy to launch its Air Force Space Command-52 (AFSPC-52) satellite.

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