View Full Version : New Method Pinpoints the Age of the Milky Way

2005-Sep-07, 11:41 AM
SUMMARY: University of Chicago researcher Nicolas Dauphas has developed a new method to calculate the age of the Milky Way by measuring two long-lived radioactive elements in meteorites. By calculating the amount of uranium-238 and thorium-232, Dauphas determined that the Milky Way is approximately 14.5 billion years old, give or take 2 billion. This is a close match for the age of the Universe, calculated to be 13.7 billion years by NASA's WMAP spacecraft. This means that it probably didn't take much time after the Big Bang for large structures, such as the Milky Way, to form.

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