Earlier this month, NASA engineers loaded the final test article for NASA's Space Launch System into its test stand at #NASAMarshall! The liquid oxygen tank structural test article, one of two propellant tanks in the SLS core stage, will be pushed and pulled by 38 hydraulic cylinders with millions of pounds of force. Learn more about how we're testing SLS to send Artemis 1 to the Moon >> go.nasa.gov/2XyrEWB | NASA's Marshall Space Flight Center