In terms of nuclear reactions, two mechanisms make it possible to produce cosmogenic nuclides: The spallation The muonic capture The high-energy galactic cosmic rays (between 1 GeV for a helion…
Cosmos
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2
Deep in the Cosmos
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Our galaxy, the Milky Way, is isolated in space but it is not alone. The galaxy closest to us is Andromeda, M31. It is 2.5 million light-years away, which is…
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