Question

what is intersteller space?​

Answer 1

Answer:

'Inter' means between. 'Stellar' refers to stars. “Easy!” you think, “Interstellar space is the part of space that exists between stars.” Not so fast! ... For interstellar space to be something different, then there must be some defined boundary between the space near a star and the space in between stars.

Answer 2

Answer:

In astronomy, the interstellar medium is the matter and radiation that exists 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.