Thursday, February 6, 2014

An astronomical mystery

This diagram depicts a sharp increase in Carbon-14, a radioactive element, that occured in the year 773 AD:
According to an article in the the Physics arXiv Blog, the cause of this spike is a major mystery:
So what caused this sudden increase in carbon-14? Astronomers agree that the culprit must have come from space, beyond that they are at loggerheads. Now the battle is hotting up to correctly identify the extraterrestrial source of this medieval carbon spike and resulting scientific spat is becoming increasingly entertaining.
You can read the rest of this article, here.  And it is actually, a pretty entertaining story.[ht: realclearscience]