Misc: Who had a hit in 1974 with 'when will i see you again'?

Questions

In 1945 Robert---------- , rocketry pioneer, died. ?

In 1949 First practical ---------- TV tube announced -- Toledo, Oh. ?

In 1951 Armistice talks to end the Korean conflict began at---------- . ?

In 1962---------- , first geosynchronous communications satellite, launched. ?

In 1962 Telstar, first ---------- communications satellite, launched. ?