Science: Space Exploration: The border between Earth's Solar System and the awesome beyond called Intestellar Space

This morning in the wee hours way before dawn, I learned that there's a boundary zone interfacing between the planetary system of old Sol and that awesome otherness of the farflung Stars, er, at least of the galaxy of the Milky Way in which old Sol makes its home. That star-spangled otherness, at the center of which Aristotle thawt there sat (sort of) the Unmoved Mover to which the orbiting Stars were attracted but which they could never reach no matter how attracted, is everything of what we call Outer Space.

Well, you get my idea. I learned that Voyager I had achievewd a distance of 8.7 million miles from the sun and had just now "entered the heliosheath, a region beyond termination shock -- the critical boundary that marks the transition from the solar system into interstellar space." Heliosheath. That's the core concept, the term for the core concept that dawned in the pre-dawn darkness of my learning this infobit. Apparently, according to the CNN report, the sun emits a constant "solar wind," and at the very edge of interstellar space the wind gives out. "At the termination shock boundary, the solar wind dissipates and begins to give way to the interstellar medium -- the gases that float in the void between stars." I guess it's the sudden absence of the wind that constitutes the "termination shock."

Voyager I is expected to continue on, in the slower but denser medium of interstellar physical reality - until 2020, when radio contact will be lost, but apparently the space probe will just keep going until pulled into some magnetic attractor that burns it up, or .... - Owlb

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