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1 .This is Scientific American 60-Second Science. I'm Steve Mirsky. Got a minute?
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2 .A recently discovered breed of galaxies really caught astronomers¡¯ attention.
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3 .Because they look like jellyfish.
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4 .Astronomers found the first jellyfish galaxy a decade ago.
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5 .Such a galaxy has a disk of stars, like our Milky Way, plus long blue tendrils.
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6 .A jellyfish galaxy was once a spiral like the Milky Way, spawning new stars from its gas and dust.
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7 .But unlike the Milky Way, a jellyfish belongs to a cluster of galaxies.
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8 .A recent analysis of Hubble telescope images led to the conclusion that extremely hot gas from the cluster is behind the formation of jellyfish.
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9 .That study is in the Astrophysical Journal Letters.
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10 .As the galaxy plows through space, this hot gas rips out the galaxy's own gas and dust, forming the long streamers behind the galaxy.
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11 .This torn-out gas still gives birth to new stars.
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12 .The brightest of these newborn stars shine blue.
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13 .So the former disc-shaped galaxy metamorphosizes into a celestial jellyfish sporting long blue tendrils.
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14 .The galaxy will eventually literally run out of gas, and thus lose the ability to create any more new stars.
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15 .Jellyfish in the sea can be deadly.
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16 .But in space, the mortally wounded victim is the jellyfish galaxy itself.
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17 .Thanks for the minute, for Scientific American's 60-Second Science.I'm Steve Mirsky.
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