Voyager 2 launched 42 years ago today
That thing is over 11 billion miles from earth and just last month we were able to tell it to fire its thrusters to correct trajectory.
Note that 11 Billion miles is about 16 light hours away, it takes 16 hours for us to send and execute a command on this thing (one way) .
PFFT and you complain about your 4G speeds
This is utterly amazing!