[sebazzz]

It is not an explosion. From the first comment:

Engine didn't explode, it detected an anomaly and shut itself down. Here's spacex's statement concerning the event-

"Approximately one minute and 19 seconds into last night's launch, the Falcon 9 rocket detected an anomaly on one first stage engine. Initial data suggests that one of the rocket's nine Merlin engines, Engine 1, lost pressure suddenly and an engine shutdown command was issued. We know the engine did not explode, because we continued to receive data from it. Panels designed to relieve pressure within the engine bay were ejected to protect the stage and other engines."

[gizmo385]

> Panels designed to relieve pressure within the engine bay were ejected to protect the stage and other engines.

Does anyone have details on this? I'm just curious how these work because it sounds fascinating.