There’s no north or anything, are there coordinates or you just point at a planet and go for it?
In: Physics
The US has ground stations with radar transmitters and receivers at 3 places on Earth.
This is called the Deep Space Network.
It sends a radio signal to the probe, the probe shifts the frequency and transmits it back.
By comparing the signal, the shift, and what got back, they can use math and physics to figure out where the probe is.
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