NASA reports 500-second RS-25 development-engine test — sources for revision 1

NASA

Source date: 2026-10-23.

Supporting location: Image-article caption describing October 21 test of engine10001,500-second duration,111%powerandnon-flightdevelopmentrole..

Original source

Source dates are distinct from Iliyn’s preparation date. Source statements do not independently prove underlying events. No full source articles or source photographs are reproduced.

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