Misc: What ocean is almost exactly half the size of the Pacific?

Questions

In 1979 ---------- makes 1st fly-by of Saturn, discovers new moon, rings. ?

In 1982 ---------- leaves Lebanon. ?

In 1982 Palestinian Liberation Organization leaves---------- . ?

In 1983 Korean ---------- strays into Siberia and is shot down by a Soviet jet. ?

In 1983 Korean Boeing 747 strays into ---------- and is shot down by a Soviet jet. ?