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What Struck Earth in 775?
ananyo writes "Just over 1,200 years ago, the planet was hit by an extremely intense burst of high-energy radiation of unknown cause, scientists studying tree-ring data have found. The radiation burst, which seems to have hit between 774 and 775, was detected by looking at the amounts of the radioactive isotope carbon-14 in tree rings that formed during the 775 growing season in the Northern Hemisphere. The increase in 14C levels is so clear that the scientists conclude that the atmospheric level of 14C must have jumped by 1.2% over the course of no longer than a year, about 20 times more than the normal rate of variation (abstract). Yet, as the only known events that can produce a 14C spike are supernova explosions or giant solar flares, and neither event was observed at the time, astronomers have a cosmic mystery on their hands."
You need only look at the years leading up to 775 to unravel this mystery. In 773 at the start of the Islamic Golden Age, the number zero was introduced to Baghdad which would, in 775, surpass China's capital of Chang'an as Earth's largest city. Now, we know from the second law of thermodynamics that 'the entropy of an isolated system that is in equilibrium is constant.' Now with all those people suddenly using zero in tons of transactions and writings, Earth experienced a huge decrease in entropy. I'm sure if you analyze the existing works from the time, you'll find that pervasive use of the hot new number zero increased the frequency of numbers at the time by 1.2%. That means that somewhere there had to be an increase in entropy to maintain the balance described by the second law of thermodynamics. Of course, anyone with a mail-order internet degree can tell you the obvious natural source of entropy at the time would be the decay of nitrogen-14. What? Falsifiability? Just watch, the floods in Thailand have lead to a decrease in production of ones and zeros hard drives which means we'll finally get a break from this 'global warming' or (let's just call it for what it really is) the 'entropic energy extravaganza!'
Also, for good measure: Nazis.
My work here is dung.
Is that you?
No. The sun was completely invisible until 1013.
"Behind the Sun?"
Maximum Prophet, for your information, the Earth rotates around the Sun.
Being behind the Sun may not matter here, if the effect was strong and _long_ enough to elevate C14 levels.
Wrong! Back then, the universe rotated around the earth. Everybody knows that. So it could be perfectly true back then, that this supernova hid behind the sun.
The Great Rabbit will protect me.
Just because you are paranoid does not mean that no-one is out to get you.
Of course, it all makes sense now. The supernove killed all the turtles, so the Earth had no choice but to start rotating.
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