@bearnard45,
as Ive read , earth rockets send a cluster of these "Umbrella shaped" A/R units that become motile based upon A/R of photons . As I understood, Its possible to hve a nanosat reach at LEAST 0.29 (c) by th time it reached the 'middle" of the Oort cloud and was on its way to another solar "filling station" which would boost the speed to >50% (c). micro circuitry and hybrid circuitry allows data collection at extremely tiny receptors and Transmitters.
Itd be like having an ocean full of free range "space bouys" sending back unique data for future use by our species as it must move into the void.