Science POLARBEAR project offers clues about origin of universe's cosmic growth spurt

An international team of scientists has detected 'b mode' polarization pointing to evidence of cosmic inflation, a powerful growth spurt that scientists hypothesize took place in the first fraction of a second after the big bang 13.8 billion years ago.

By , Staff writer

ESA, Planck Collaboration via NASA/AP Photo/File

Since the discovery in the late 1920s that the universe was expanding, step by step cosmologists have been working backward, building a picture of how the universe began and subsequently evolved.