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1 .This is Scientific American's 60-Second Space. I'm John Matson. Got a minute?
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2 .Black holes tend to be pretty massive.
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3 .The one at the center of our galaxy is about four million times the mass of the sun.
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4 .But that's puny compared with the whopper that researchers discovered last year in an otherwise unremarkable galaxy called NGC 1277.
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5 .Its black hole is some 17 billion times the mass of the sun.
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6 .By typical standards, such a black hole is about 100 times too massive for that galaxy.
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7 .The discovery got researchers wondering how the mismatch came about.
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8 .One idea, albeit a speculative one is that the black hole actually came from a different galaxy.
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9 .Say the black hole formed from the merger of two smaller black holes in a larger galaxy nearby.
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10 .The recoil from that violent event could have flung the ultramassive black hole into space.
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11 .Where it wandered, among a cluster of galaxies, before settling into a new home in NGC 1277.
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12 .The hypothesis is in the Astrophysical Journal Letters.
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13 .The paper's authors note that the runaway black hole scenario requires the confluence of seemingly unlikely events.
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14 .But the universe is a big place, where improbable things happen all the time.
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15 .Look at you.
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16 .Thanks for the minute, for Scientific American's 60-Second Space. I'm John Matson.
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