How do space probes transmit data back to Earth across vast distances?
In: Planetary Science
Radioeaves, with a few special tricks. Bigger dishes on both the transmitting and receiving radios to increase the amount of power effectively received, more sensitive receivers with lower internal noise to hear s cleaner signal, and using lower symbol rates to increase the amount of energy per bit received which can negate some of the random noise.
The last is sort of like how you can communicate across a further distance by yelling slowly rather than talking at a normal speed and volume – is harder for the background noise to mess up words that are functionally much longer in duration than a given random “noise”.
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