Age of the universe

Careful observations, by the Wilkinson Microwave Anisotropy Probe over 3 years, of microwave radiation left over from the Big Bang have produced the most accurate information yet about the age of the Universe: 13.73 billion years, with an error margin of just 120 million years.

The diagram below, courtesy of NASA, gives an idea of the sequence of events during that time.


We really can’t hope to comprehend these sorts of time scales, but the evidence makes for interesting conjecture and a great narrative!

The Bad Astronomy Blog has a great overview of the universe’s story thus far.


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