Abstract
Various possibilities for testing different theories on the formation of ordinary matter are discussed. The proportions of other light elements, which were not burnt to helium-4 by the time cosmic fusion ceased, are focused to test the theory of big bang nucleosynthesis (BBN). The cosmic microwave background radiation (CMB) is a probe for the atomic age, when electrons and nuclei condensed into atoms. The spectrum of the microwaves at different positions in the sky measures the cosmic temperatures and this is a probe of densities of matter.
Original language | English (US) |
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Pages (from-to) | 36-39 |
Number of pages | 4 |
Journal | New Scientist |
Volume | 181 |
Issue number | 2434 |
State | Published - Feb 14 2004 |
ASJC Scopus subject areas
- General