Bezos' rocket company solves crash mystery, resumes launches after 6-month hiatus.

Blue Origin has identified an overheated rocket engine as the cause of last year's launch failure, which resulted in grounded flights for six months. The company found that a design change to the engine's boundary layer cooling system led to the problem. Blue Origin is implementing additional design changes to improve structural performance and expects to return to flight soon. No one was hurt, and all critical flight hardware was recovered within days.