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interstellar medium
/ˌɪntɚstˈɛlɚ mˈiːdiəm/
/ˌɪntəstˈɛlə mˈiːdiəm/
Interstellar medium
01
the matter and radiation that exists in the space between stars within a galaxy
Examples
The interstellar medium is made up of gas, dust, and cosmic rays.
Cosmic rays interact with the interstellar medium, producing radiation.
