Yeah, I had this reaction of like "yeah, only 21 hours? that's not too long"… Then it occurred to me, it's 21 hours at the _speed of light_, something we generally consider effectively "instant" here on Earth. Pretty fascinating stuff. I'm really happy to hear we're still getting transmissions back from Voyager 1 - from nearly 23 billion kilometers away, for that matter!

Also really interesting is the Voyager FAQ, even from the first question (about whether the cameras could be turned back on). "Mission managers removed the software from both spacecraft that controls the camera. The computers on the ground that understand the software and analyze the images do not exist anymore."

https://voyager.jpl.nasa.gov/frequently-asked-questions/