1.6K views · 118 reactions | Check out this time-lapse video that shows how #NASAMichoud joined NASA's Space Launch System rocket’s core stage forward assembly with the 130-foot liquid hydrogen tank for the NASA Artemis II mission. This completes assembly of four of the five large structures that make up the core stage that will help send the first astronauts to lunar orbit on #Artemis II. | NASA Michoud Assembly Facility | Facebook

RS-25 engines powering NASA's SLS (Space Launch System) rocket use liquid oxygen and liquid hydrogen as propellants – the same elements that combine to create water (H2O). For an RS-25 engine test, liquid hydrogen and liquid oxygen are mixed in the engine combustion chamber and ignited, which results in extremely high-temperature exhaust (up to 6,000 degrees F) exiting the nozzle into the flame deflector at a very high rate and pressure. Hundreds of thousands of gallons of water also are flowing