07 Mar 08 _ 13.73 +/- .12 billion years


By casey
in Awesomeness, Casey's Corner

That’s the age of our universe.

That’s an unprecedented level of accuracy.  How’d they figure that out?  Read this post on the Bad Astronomy blog, but the picture below is essentially how.

WMAP

That’s the WMAP image of the Cosmic Microwave Background radition — the echo of the Big Bang. It holds the key.  The color variations correspond to minute differences in temperature.

My inner physics student loves stuff like this.

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