heliopause
美 [hi'laɪɒpɔz]
英 [hi:'laɪɒpɔ:z]
- 网络太阳驻点；太阳层顶；太阳风层顶
n. | 1. the point marking the beginning of interstellar space and the endpoint boundary of our solar system, 10-15 billion miles from the Sun, where the pressure from solar winds is in balance with that of interstellar winds |