took place on 18th of February 1930 - almost exactly 75 years ago.

However, the sattelite of PLuto Charon remained not discovered for ...
48 YEARS !
It was ACCIDENTLY discovered on pictures of PLuto in 1978.

The technology needed to discover Charon existed for all 48 years ( from
1930 to 1978 ).

Why it was not discovered ?

http://www.interlog.com/~wnowak/book