现在我们这倒了很多椭圆星系的新星诞生的证据，它们的动力来自于吞食更小的星系。

Now we are finding evidence of star birth in many elliptical galaxies, fueled mostly by cannibalizing smaller galaxies.

youdao

然而，当星系中心质量超级大的黑洞“吞食”时，落入其中的物质便会升温，发出一道明亮的光，通过电磁波频谱可以显示出来。

But when supermassive black holes at the center of a galaxy feed, the material falling into them heats up, giving off a bright glow across the electromagnetic spectrum.

youdao

然而，当星系中心质量超级大的黑洞“吞食”时，落入其中的物质便会升温，发出一道明亮的光，通过电磁波频谱可以显示出来。

But when supermassive black holes at the center of a galaxy feed, the material falling into them heats up, giving off a bright glow across the electromagnetic spectrum.

youdao