A air safety expert said "[Passenger] aircraft simply don't just disappear without a trace." In a catastrophic failure at altitude, wreckage would be strewn over a large area of the sea. Minor technical failures resulting in a controlled descent would result in survivors or wreckage concentrated in a smaller area.

No. A giant, interstellar-class alien spaceship swallowed up Flight 447, cutting off radio messages before an SOS could be transmitted.

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