What Is It
Interstellar space is a section in the universe that lies between the stars. However, it’s more straightforward to discern the nature of interstellar space when comparing it with what is over the border.
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What Is It
A Boundary
This section in the galaxy is different from the region within the Sun’s vicinity. This entails that there must be a boundary position between these two areas. This border is known as the heliopause.
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A Boundary