The Pristine Universe

See allHide authors and affiliations

Science  02 Dec 2011:
Vol. 334, Issue 6060, pp. 1216-1217
DOI: 10.1126/science.1215355

You are currently viewing the summary.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution


The existence of everything around us today sometimes seems far removed from the thermonuclear reactions occurring in the interiors of stars and stellar supernovae. These processes are responsible for producing almost all elements heavier than helium and for dispersing these elements throughout the universe. On page 1245 of this issue, Fumagalli et al. (1) report two gaseous regions that consist of virtually pristine gas (no detected elements heavier than helium) at an epoch where none are expected to exist. These findings demonstrate the nonuniform dispersion of elements throughout the universe, with direct consequences on the formation epoch of first-generation stars.