Voyager sends Nasa 'impossible data' from the Solar System's edge.

Nasa is exploring a Voyager 1 mystery.

Launched 44 years ago, Voyager 1 is the furthest human-made object.

It's travelling through the "interstellar medium" beyond the Sun's influence.

The probe is receiving and executing orders from Earth, but the AACS readouts don't match what's occurring on board.

The device keeps the craft's antenna oriented to Earth so Nasa can receive data.

All signs show the AACS is running OK, but the telemetry data it's providing seems random, failing to represent the system's condition.

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