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Bombs preventing rescue of kidnapped youths, Nigerian police say
The father of one of the 19 young abductees tells the BBC he hasn't eaten in three days out of worry.
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Black hole jets may decide the fate of entire galaxies
Powerful jets from supermassive black holes can disturb star-forming gas far beyond a galaxy’s visible edge, leaving a glowing trail hundreds of thousands of light-years long. By keeping this gas hot and preventing it from falling inward, the jets may help determine whether a gal
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