Check out NASA's SLS lunar mega-rocket test launch

As part of a critical test before the first launch of the giant rocket, the agency plans to ignite

four main engines on their accelerator withlarge load capacity. The test, designed to simulate core stage performance during launch, will take place at the agency's Stennis Space Center in Mississippi.

Today's engine test isThe final milestone in a series of tests by the Green Run agency to make sure the SLS rocket is ready for its first launch, called Artemis 1, which will send the Orion unmanned spacecraft around the moon. The first flight is scheduled for the end of this year.

SLS is NASA's next super-heavy rocket.generation, which will transport astronauts to the Moon as part of the agency's Artemis lunar program. Launched by the end of this year, Artemis 1 will be the first of a series of missions that will culminate in NASA's first manned lunar landing since Apollo. This mission, called Artemis 3, could happen as early as 2024 if everything goes according to plan.

To this end, NASA is testing four enginesRS-25 of the massive SLS rocket before launch. The agency systematically tests each engine and performs launch day procedures, such as fueling, to ensure all systems are working properly.

Combustion engine upcoming test -the final stage of the testing process. On Saturday, engineers will load the SLS booster with over 700,000 gallons of supercooled fuel before firing all four RS-25 engines simultaneously. This will be the first time that four RS-25 engines will operate simultaneously. The same engines powered the space shuttle, but the orbiter only took three to fly.

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