Comment on Kosmos 482: questions around a failed 1972 Venera lander still orbiting EarthparentComments−Teknoman1174ySome of the Russian satellites had full-on liquid cooled nuclear reactors, not RTGs.https://en.m.wikipedia.org/wiki/TOPAZ_nuclear_reactorThe flight profile did indeed have the reactor core being ejected into a graveyard orbit before deorbiting the satellite:https://en.m.wikipedia.org/wiki/Kosmos_954The US ran a couple of experiments but otherwise didn't officially use them:https://en.m.wikipedia.org/wiki/SNAP-10A
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Some of the Russian satellites had full-on liquid cooled nuclear reactors, not RTGs.
https://en.m.wikipedia.org/wiki/TOPAZ_nuclear_reactor
The flight profile did indeed have the reactor core being ejected into a graveyard orbit before deorbiting the satellite:
https://en.m.wikipedia.org/wiki/Kosmos_954
The US ran a couple of experiments but otherwise didn't officially use them:
https://en.m.wikipedia.org/wiki/SNAP-10A