galactic corona

基本解释

The Galactic Dust in Corona Australis: Two blue-reflection nebulae.
南冕座星尘内，两个星云焕发着梦幻般的蓝色光辉。
Above and below the galactic plain, in which Earth and our solar system reside, they detected an extremely thin, hot gas corona, or halo.
在这上下居住着地球和我们的太阳系的星系平原上，科学家发现一种极薄的热气日冕。
The galactic corona must therefore extend much farther out than was originally proposed by Spitzer— out to a few hundred thousand light-years, rather than a few thousand.
如此一来，星系冕的范围必然延伸到比原先史毕哲所设想的还远─不是数千，而是数十万光年的远处。