Question

What is the quantum structure of the interstellar matter?

Answer 1

the quantum structure is of interstellar matter is same as other matters except for the fact that it has more charged particles
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.

however the composition of dark matter which also form a part of interstellar matter is not known

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