| NOUN | location | heliopause | the boundary marking the edge of the sun's influence |
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| Meaning | The boundary marking the edge of the sun's influence; the boundary (roughly 100 AU from the sun) between the interplanetary medium and the interstellar medium; where the solar wind from the sun and the radiation from other stars meet. | |
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| Broader | boundary, bound, bounds | The line or plane indicating the limit or extent of something |
| Spanish | heliopausa | |
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