Origin of Elements in the Evolving Universe.docx

Origin of Elements in the Evolving Universe.docx - Origin...

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Origin of Elements in the Evolving Universe Penzias & Wilson ~1965 CMB (R) o Gamma- Microwaves o First Light o ~ 13.4 Billion Years Hubble ~1920 o Multiple Galaxies o Farther an object, the faster it is o Universe is stretching The earliest galaxies are… o Small o Poorly formed o Composed mostly of H & HE o Contains very few heavy elements All H, some HE, and a few heavier elements formed in the Big Bang How Stars Work o An inward force (gravity) o & an outward force (Nuclear Fusion)
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