Scientists Make Best-Yet Map of Solar System's Interstellar Boundaries
Briefly

We live in a bubbleliterally.It's called the heliosphere, and it's made of tenuous plasma billowing from the sun.This ionized gas flows outward along magnetic field lines emerging from our star, spooling out in radial spirals tied to the sun's rotation.To venture beyond where this wind wanes against the greater flows of plasma coursing through our galaxy is, in a very real sense, to leave our solar system behind.
Read at www.scientificamerican.com
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