A Hubble image of a field of distant galaxies. A new study of the gas content in galaxies so distant their light has been traveling for about ten billion years suggests that the processes converting gas into stars is about the same back then as in the local universe. NASA, ESA, G. Illingworth (UCO/Lick & UCSC), R. Bouwens (UCO/Lick & Leiden U.), and the HUDF09 Team
The first stars appeared ~100 million years after the big bang, and ever since then stars and star formation processes have lit up the cosmos. When the universe was about 3 billion years old, star formation activity peaked at rates about 10 times above current levels...
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