WMAP was launched on June 2001 to revolutionize the field of cosmology. WMAP studied the remnants of heat that lingered after the Big Bang, a pattern frozen in time from when the universe was only about 380,000 years old. The light arriving to WMAP from this great distance has since stretched to microwave wavelengths. Subtle differences observed in the texture of this so-called “cosmic microwave background” have revealed the geometry, composition and age of the universe. The probe showed that the universe is flat, and most likely endless. It also yielded the first full-sky map of the cosmic microwave background (see inset image). Other results included how this primeval light is polarized and forms the blueprint for the first galaxy formation.
When science journalist Simon Singh pointed out that the lyrics did not reflect current scientific knowledge (WMAP determined the age of the universe with great accuracy), Melua agreed to re-record the song:“We are 12 billion light years from the edgeThat’s a guess
No one can ever say it’s true.”
“We are 13.7 billion light years from the edge of the observable universeListen to the before and after version here. Now that is one scientifically responsible artist!
That’s a good estimate with well-defined error bars
And with available information”