Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-03-03
Science 229 (2003) 1333-1334
Astronomy and Astrophysics
Astrophysics
Perspective: Astronomy. See summary at http://www.sciencemag.org/cgi/content/summary/299/5611/1333 (need sign up) or full te
Scientific paper
Recent announcements that the Cosmic Microwave Background (CMB) - the faint remnant of the Big Bang - is polarized have caused a stir among cosmologists. Such polarization has long been predicted but could not be detected, until the recent DASI and WMAP detections. The polarization is a signature of the motion of the primordial seeds that led to the galaxies and large-scale structure of the Universe observed today. Earlier measurements of tiny temperature fluctuations in the CMB have been used to infer the sizes of the primordial seeds. The polarization signature should help to determine the fundamental parameters of cosmology and to explain how large-scale structure arose [Highwire abstract].
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