Editing History of science (section)

===Big Bang===
The observation by [[Edwin Hubble]] in 1929 that the speed at which galaxies recede positively correlates with their distance, led to the understanding that the universe is expanding, and the formulation of the [[Big Bang]] theory by [[Georges Lemaître]]. [[George Gamow]], [[Ralph Alpher]], and [[Robert Herman]] had calculated that there should be evidence for a [[Big Bang]] in the background temperature of the universe.<ref>{{cite journal | last1=Alpher | first1=Ralph A. | last2=Herman | first2= Robert| year =1948 | title=Evolution of the Universe | journal=[[Nature (journal)|Nature]] | volume=162 | issue=4124| pages=774–775 | doi=10.1038/162774b0 | bibcode=1948Natur.162..774A | s2cid=4113488 }}<br />{{cite journal | last1=Gamow | first1=G. | doi=10.1038/162680a0 | title=The Evolution of the Universe | pmid=18893719 | journal=Nature | year=1948 | volume=162 | issue=4122 | pages=680–682 | bibcode=1948Natur.162..680G | s2cid=4793163 }}</ref> In 1964, [[Arno Penzias]] and [[Robert Woodrow Wilson|Robert Wilson]]<ref>{{cite web|url=http://nobelprize.org/physics/laureates/1978/wilson-lecture.pdf|title=Wilson's 1978 Nobel lecture|website=nobelprize.org|access-date=23 March 2005|archive-date=13 April 2005|archive-url=https://web.archive.org/web/20050413230649/http://nobelprize.org/physics/laureates/1978/wilson-lecture.pdf|url-status=live}}</ref> discovered a 3&nbsp;Kelvin background hiss in their [[Bell Labs]] [[radiotelescope]] (the [[Holmdel Horn Antenna]]), which was evidence for this hypothesis, and formed the basis for a number of results that helped determine the [[age of the universe]].