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.
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.
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