The process is not entirely efficient, and there is a byproduct: an enormous amount of energy — radio waves, X-rays and regular light — hyper-illuminates the whole scene.

整个过程并不是特别有效率，而且还有副产品：一个庞大的能量团——无线电波，X射线和常规的光——高度照亮着整个区域。

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The X-43A, or "Hyper-X" was built specifically to test scramjets, or supersonic ramjets, which burn fuel in air travelling at supersonic speeds.

BBC: Mach 10 scramjet prepares for launch

Besides revealing clues about the lost galaxy, the black hole itself, called HLX-1 (Hyper-Luminous X-ray source 1), is scientifically interesting, researchers said.

MSN: Rare Black Hole Survives Galaxy's Destruction