yes
no.
Yes
yes
The Russian Space Station Mir which had an estimated 15 years in orbit, far longer than originally planned and then there were the earlier Salyut series of space stations which helped prepare the way for future research work of Mir and the International Space Station.
less than 50 commercial power stations of more than 1 MW.
more than tw0
London has more train stations than any other town in the UK.
Certain ones are designed for repeated use. The SPACE SHUTTLE was one example of such.
CHP power stations produce a lot more heat. And therefor a lot more power. So that then means there is more efficiencies.
The number of TV is ONE, radio stations are currently more than 10
Other than visiting individual space stations, the moon is the only place that astronauts have visited.