system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Voyager 1 was launched in 1977 and is almost 12,000,000,000 miles away from Earth, yet we still receive data transmissions from it. HOW?
gpt
The probe has a nuclear power pile and a radio transmitter.  We have radio telescope dishes that are sensitive enough to receive radio information from the distant parts of the universe, so even a 12-billion mile distant radio signal is enough to be received by such dishes.