Artemis I - Fuel load & shrinkage

• When loaded with 537,000 gallons of liquid hydrogen at minus 423 degrees Fahrenheit, the huge fuel tank in the SLS core stage will shrink by about 6 inches in length and 1 inch in diameter. The rocket's liquid oxygen tank will shrink by an inch and a half in length and about 1.3 inches in diameter.
• Because of that shrinkage, everything that connects to the tanks — ducts and vent lines, brackets, etc. — must attach with accordion-like bellows for flexibility.