This evidence is suggestive that rather than a typical supernova, this was actually a gamma-ray burst.
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Scientists have uncovered evidence showing that a gamma ray burst may have irradiated the Earth over 1200 years ago.
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But for a short-lived event such as a gamma-ray burst it means that the same blast may become visible again in the future.
Almost as an afterthought, it had a gamma-ray detector bolted on.
Fusa Miyake discovered Carbon-14 and Beryllium-10 traces in tree rings from the era, which point to a gamma ray burst from a celestial body other than the Sun.
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Four-stranded DNA, a database of alien planets, a new super-chemical to kill hospital bugs and a byzantine gamma-radiation blast.
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Then the patient gets a full-body gamma scan at a nuclear imaging center within 10 minutes and again three or four days later.
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The drug is a synthetic version of interferon gamma-1b, a distant cousin of the more famous virus fighter used against hepatitis and cancer.
Patients with a mutant version of the PPAR gamma gene have a 25% higher risk of developing adult-onset diabetes, in which cells stop responding to insulin's orders.
Scientists think that a blast of Gamma radiation might have hit our planet in the halcyon days of the year 775.
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That ubiquity has already given Gamma a public relations headache.
The researchers found that while two-thirds of infants with biliary atresia produced a cytokine called gamma-interferon, the protein was not found in any of the samples of infants with cholestasis.
If the equivalent of an earthquake were to occur on one (and they are known to occur on pulsars), it would be powerful enough to erupt with a blast of gamma rays thereby solving puzzle number three, the soft gamma-ray repeaters.
What remains a mystery is how gamma rays are created at such extraordinary energies.
They found that the gene interacts with a key part of the immune system, a chemical called interferon gamma.
When a supergiant finally goes bang it produces a massive burst of gamma rays and that burst lasts much longer because the supergiant is so big and there's much more fuel to burn through.
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The team, at the Gray Institute for Radiation Oncology and Biology at Oxford University, were looking for a protein, called gamma-H2AX, which is produced in response to damaged DNA. This tends to be one of the first steps on the road to a cell becoming cancerous.
It turns out gamma secretase plays a role in regulating cell growth in the intestines.
Do you think there is a safety issue with other gamma secretase inhibitors going forward in testing, such as the one Bristol-Myers Squibb is testing?
According to Dr. Steve Gardell, who led the teams, these scientists created a chemical to which they knew gamma secretase would bind.
Indeed, a group of Harvard scientists will also publish a paper identifying presenilin 1 as gamma secretase in the July issue of Nature Cell Biology.
She told the BBC that gamma-H2AX was a "fairly general phenomenon" and it "would be the dream" to develop a single test for a wide range of cancers.
"This is the most spectacular burst ever seen at high energy, " said Dr Valerie Connaughton, a scientist from the University of Alabama, Huntsville, and a member of Fermi's Gamma-ray Burst Monitor (GBM) instrument team.
X-ray and gamma-ray spectrometer, a magnetometer and a laser range-finder, as well as good, old-fashioned digital photography.
The boost to one in particular, interferon-gamma, was sizeable, a 13.6 fold increase.
To detect and explain this previously unknown type of gamma-ray burst is a real achievement for the University of Warwick.
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In those with a milder form of the disease, they found a protein associated with a bacterial immune response - interferon-gamma.
Its Burst Alert Telescope is set up to catch the intense but fleeting flash of very high-energy gamma radiation that initially signals a GRB event.
It may be there was something bad about this compound, or it may be that blocking the gamma secretase enzyme is not a good approach.
In this scenario, the gamma ray burst was caused by a large, comet-like object that fell into a neutron star.
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