* SpaceX fires up huge Super Heavy booster ahead of 4th Starship test flight (photos, video) Space.com
* Booster 11 Conducts Engine Testing as Starbase Continues to Change - NASASpaceFlight.com NASASpaceflight.com
* SpaceX fires up the Super Heavy booster ahead of Flight 4 TESLARATI
* Giant Space X completes test of new Starship launch system The Telegraph
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