Blue Origin hot-fires New Glenn’s main BE-4 engines on first reuse of a previously flown booster ahead of weekend launch
Blue Origin conducted a key pre-launch demonstration for New Glenn, lighting all seven BE-4 engines for about 20 seconds at 7:45 a.m. EDT (1145 UTC), less than an hour after the Sun cleared over Florida. Engineers will analyze the engine-off data as the company targets a weekend launch.