In astronomy, the interstellar medium (ISM) is the matter and radiation that exist in the space between the star systems in a galaxy. This matter includes gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space
I think you should get the second one.
I connotative interpretation is when the viewer judges a painting not for the content of the image but what emotions the painting evokes and what deeper meanings the painting has.
E.g. Picasso's masterpiece, Guernica, is a painting that heavily relies on connotative interpretation due to its roots in political activism and a rejection of the violence and horrific events of The Spanish Civil War.
