Labels:bulletin board | daily | encyclical | fence | sky OCR: pted history understand the generally itis known as the universe according assues the "hot big bang model by that the wiverse is desci the big bang. Friedmann model. right as the In such models one finds or radiation universe expands. any m rerse doubles it gets cooler. (When the half.) Since size, its temperature ure of the temperature simply f the particles. average energy -or spee ould have a this cooling of the univer At very high major effect on the matte be moving temperatures, particles escape any around so fast that they ue nucl lear attraction toward each ot as they cooled or electromagnetic forces that attract off one would expect part each other to start to clw acco1 ding assumes unir erse desc uiverse verse tempeatnre spet uiver nuclear force exoect stav
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