How does the universe forge elements heavier than iron?
In short: Beyond iron, the periodic table is built through a sudden influx of neutrons. This video explores the cosmic mechanisms that create precious metals like gold and platinum.
Professor Anna Frebel explains the two primary processes responsible for the formation of the heaviest elements. This nucleosynthesis occurs through the rapid addition of many neutrons to iron and other existing atoms.
The lecture details how these heavy elements, including silver, platinum, and lead, are produced within red giant stars and during the high-energy mergers of neutron stars.
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Sources
- Summary by Intellect · source: Ep. 9: Formation of the Heaviest Elements
- Also: Episode 9: Formation of the Heaviest Elements | Cosmic Origin of the Chemical Elements | Physics | MIT OpenCourseWare
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