This leads the researchers to suspect that a white dwarf star strayed too close to the intermediate-mass black hole and was ripped apart by tidal forces.

这导致研究人员怀疑一个迷途的白矮星离某个中等质量黑洞太接近了，并受其潮汐引力的撕扯。

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After about 500 million years, the ionized helium in the quasars cooled and slowed enough that dwarf galaxies could begin bulking up again. (See black hole pictures.)

经过50亿年，类星体中的氦离子慢慢冷却，速度减慢使得矮星系能够再次成长。(见黑洞图片)。

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But in the north of the dwarf, there is a small country, the king is a black wizard, the legend is the escape from the elves.

可是在矮人的北方，还有一个小国家，国王是一个黑精灵，传说是从精灵国逃出来的。

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"The fact that there's a very young cluster of stars indicates that the intermediate-mass black hole may have originated as the central black hole in a very low-mass dwarf galaxy, "Sean Farrell, of the Sydney Institute for Astronomy in Australia, said in a statement.

MSN: Rare Black Hole Survives Galaxy's Destruction

The Hubble Space Telescope recently spied a cluster of young blue stars surrounding a rare mid-weight black hole that suggests the black hole was once at the center of a dwarf galaxy.

MSN: Rare Black Hole Survives Galaxy's Destruction