quote: “In the past, engineers have compared keeping the probes operational to keeping an old car running. The tech is severely outdated, yet it keeps ticking over – a trend often seen in the spacecraft of past decades.”
At some point us humans will probably simply have forgotten how to maintain them.
This has a good breakdown: https://www.reddit.com/r/Asimov/wiki/seriesguide/
edit: Somehow I got Foundation mixed up with Banks' Culture series. I think I have gotten through most of Foundation if not all but I've had a hard time with the Culture series, there I usually start with Player of Games..
[0] https://www.goodreads.com/book/show/35921.On_Basilisk_Statio...
[0] https://www.baen.com/on-basilisk-station.html
[1] https://www.baen.com/readonline/index/read/sku/0743435710