18:00 07 February 2010 by Richard Fisher and Rachel Courtland
Is Stephen Hawking a galactic graffiti artist? Hidden away in the cosmic microwave background, the afterglow of the big bang, the initials "SH" are clear to view (see picture, right). We took a closer look and spotted a donkey, a deer and a parrot.
NASA's Wilkinson Microwave Anisotropy Probe team, who have just released their most detailed map yet of the CMB, used Hawking's initials to draw attention to a serious point.
With each new round of WMAP data – the latest is based on seven years of data – apparent anomalies called "anisotropies" in the CMB have puzzled physicists. Such patterns have also been used to justify various exotic theories.
One notorious anomaly is the "axis of evil", an apparent alignment in the hot and cold regions where there should be randomness. Another is the "cold spot", a particularly large void in the CMB, which some have proposed is evidence of another universe nestling next to our own.
The WMAP team point out that if something as apparently unlikely as Hawking's initials can be found in the CMB data, then the chances of finding other apparently improbable patterns may also be quite high. "I do think there is a bit of a psychological effect," says WMAP's chief scientist Charles Bennett. "People want to find unusual things."
more:
http://www.newscientist.com/article/dn18489-found-hawkings-initials-written-into-the-universe.html