At the center of Facebook today is the news feed - a dynamic listing of the collective activity of all your friends.

Facebook现在的中心是新闻Feed – 一个动态的展示你的朋友所做活动的列表。

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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.

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。

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Around the country people skipped work to fill movie theaters at 37 multiplexes where Cinedigm digitally broadcast the same ad-free feed of the memorial that was being broadcast to press at the Nokia Theatre across the street from the Staples Center.

FORBES: The Star Economy