my wifi can’t even reach my bedroom
In: Technology
In addition to what other people said, they also use really slow speeds. [DSN Now](https://eyes.nasa.gov/dsn/dsn.html) tells me that Earth is currently receiving 160 *bits* per second from Voyager 2. Considering that your wifi probably manages at least 160 megabits per second, Earth has basically a million times more chances to get the correct data.
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