SLS and umbilicals
NASA will replace on the pad a seal for a quick disconnect fitting between a liquid hydrogen fuel line and the core stage of the SLS, keeping open the option for a launch attempt later this month. Credit: NASA/Bill Ingalls

PARIS — NASA officials say they’re ready to try a new approach to fueling the Space Launch System to prevent the return of leaks that scrubbed an earlier launch attempt even though they are not certain what caused that leak.

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Jeff Foust writes about space policy, commercial space, and related topics for SpaceNews. He earned a Ph.D. in planetary sciences from the Massachusetts Institute of Technology and a bachelor’s degree with honors in geophysics and planetary science...