Fact
Voyager 1 is the most distant human object and still talking
Launched in 1977, running on less power than a kettle, replying after 22 hours.
Voyager 1 crossed into interstellar space in 2012 and continues to return data from over 24 billion kilometres away. Its radioisotope generator output declines every year, and instruments are being switched off one by one. Its computers have less memory than a modern greetings card.