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Category: hubble space telescope

Hubble researchers find a gaggle of small black holes

Hubble researchers find a gaggle of small black holes

Larger black holes may be the usual attention-getters, but the smaller ones may be at least as important. A team using the Hubble Space Telescope has discovered a concentration of small black holes in the NGC 6397 globular star cluster (pictured above) 7,800 light-years away — the first to have its mass and extent recorded. …

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