这些高速电子与银河晕的光子相互作用，将它们中的一些激发，使之成为泡泡中观测到的伽马射线。
These speedy electrons interact with photons in the galactic halo, boosting some of them up to the gamma-ray energies observed in the bubbles.
其中一个细节显示，银河系似乎近来在向太空中“吹泡泡”。
One such detail, it seems, is that the Milky Way has been blowing bubbles recently.
银河系周围那个饱含伽马射线释放物质的大泡泡，是由我们星系中心的黑洞——以及它那对恒星的吞噬欲——制造出来的。这是一个国际天文学家团队得出的结论。
Giant bubbles of gamma-ray-emitting materials surrounding the Milky Way are created by our galaxy's central black hole - and its appetite for stars - according to an international team of astronomers.
应用推荐