Scientists spot two hidden 'monster' black holes

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Washington,, Jan 9 (IANS) Using data from NASA's NuSTAR (Nuclear Spectroscopic Telescope Array), a team of researchers has detected two hidden gas-enshrouded supermassive black holes located at the centres of nearby galaxies.

Monster black holes sometimes lurk behind gas and dust, hiding from the gaze of most telescopes.

But they give themselves away when material they feed on emits high-energy X-rays that NuSTAR mission recently identified.

"These black ho ..

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