Importantly, this mud also acts as a kind of plug in the hole, preventing any oil and gas from blasting up out of the hole.

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But those lower-energy X-rays can be further distorted by layers of gas between the black hole and the Earth, and previous spin observations have been contentious.

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This allowed natural gas to migrate up the hole and explode at the surface.

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The violent encounter would have stripped away most of the dwarf galaxy's stars, but it also could have compressed the gas around its central black hole, triggering a new wave of star formation.

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The pressure in the capped-off well could blow a new hole in it, letting oil and gas leak out through the seabed.

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Indeed, the coal boom blows yet another hole in the effort to restrain greenhouse-gas emissions.

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The process involves drilling a bore hole and using explosives or water to force gas to the surface.

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The end result of that merger would be the formation of a black hole, the creation of which would release large jets of gas, which would then have been followed by a weak supernova.

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