Approximately when did the terms 'hard' and 'soft' science emerge?

Answer

Around the 1960s.

The specific terminology used to categorize scientific endeavors into 'hard' and 'soft' developed approximately during the 1960s, reflecting contemporary attitudes toward objectivity and mathematical formality.

Approximately when did the terms 'hard' and 'soft' science emerge?
classificationastronomysciencehard science