The Age of the Universe

Full UniverseIn Feb. 2003, NASA's Goddard Space Flight Center posted new revelations from the Wilkinson Microwave Anisotropy Probe (WMAP). Launched on June 30, 2001, WMAP maintains an orbit a million miles from Earth. During a sweeping 12-month observation of the entire sky, WMAP captured the infant Universe in sharp focus. One of the biggest surprises revealed is that the first generation of stars in the Universe first ignited only 200 million years after the Big Bang, much earlier than many scientists had expected. In addition, the new portrait precisely pegs the age of the Universe at 13.7 billion years old, with a remarkably small one percent margin of error. WMAP found that the Big Bang and Inflation theories continue to ring true. The contents of the Universe include 4% atoms (ordinary matter), 23% of an unknown type of dark matter, and 73% of a mysterious dark energy.


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