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Focus

Black Holes May Produce Lithium

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Physics 5, 77 (2012) – Published July 13, 2012
Theorists predict that the matter surrounding some black holes may be hot enough for nuclear fusion, which could generate lithium and deepen the mysteries surrounding lithium in the universe.
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An ancient clock

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Published July 15, 2010
Refining a cosmic clock gives a more accurate reading of the age of our galaxy.
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Calibrating the cosmic clock

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Published January 4, 2010
What are the uncertainties in determining how long ago nucleosynthesis of heavy elements occurred in astrophysical bodies?
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A New Way to Make Elements

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Phys. Rev. Focus 17, 14 (2006) – Published April 21, 2006
The puzzling origins of some isotopes in the solar system are explained by accounting for blasts of antineutrinos in the first seconds of a supernova.
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The Universe Goes Nuclear

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Phys. Rev. Focus 15, 16 (2005) – Published May 5, 2005
A 1948 paper used general relativity to provide the first quantitative description of the first moments after the big bang.