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Category: black hole

One of the first known black holes is more massive than once thought

One of the first known black holes is more massive than once thought

Astronomers might need to adjust their expectations for black holes. According to the New York Times, an international research team has determined that Cygnus X-1, one of the first discovered black holes, is considerably more massive than once thought. The binary-system based hole was originally pegged at ‘just’ 15 solar masses, but is now believed …

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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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