ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] According to the theory of the Big Bang, the Universe started hot and dense and then expanded and cooled. In the hot, dense conditions of the early Universe, photons were tightly glued to matter. When the Universe was about 300,000 years old the temperature dropped below 3,000 K, allowing atomic ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/35010242
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