Everything of course only if publically available:
- Where are the probes located right now (map)?
- what is their trajectory/target location?
- what does the data look like being transmitted (I.e. Voyager isn’t more than a blip, or is it)?
- what Kind of data could be still gathered, e.g. could we ask the Probe to „take a picture“ or would the bandwidth simply not be enough?
According to [1], as we speak the DSS 14 antenna at Goldstone is receiving Voyager 1 data at a whooping 160 bits/sec.
Like if it’s 160 bits per second now, how long until it’s 100 bits per second? 10? 1?
At any rate, I believe death is imminent anyway: in a few years, the RTGs will have degraded so far that no single instrument can be powered :-(
https://destevez.net/2021/02/voyager-1-single-dish-detection...
Also this JPL document on both Voyagers is packed. Check out the chart on page 44, regarding diminishing bitrates over the coming years:
https://descanso.jpl.nasa.gov/monograph/series13/DeepCommo_C...
https://armchairastronautics.blogspot.com/p/solar-system-mis...
An example of what a signal from a probe looks like:
http://spacecollege.org/isee3/video-recording-both-isee-3-tr...