Space probes Pioneer 10 and Pioneer 11 were launch in the early 70’s with what would be nowadays called rudimentary technology. Yet they had extremely long, in fact 15 times longer than the expected minimum of 2 years(!), and productive life. These were truly amazing and well-design engineering pieces.
Yet even as the probes are out of touch with us, new science is being done as reported by Ars Technica.