In tree rings, Japanese scientists find 8th-century cosmic mystery
2012 06 04

From: France24.com

In the late eighth century, Earth was hit by a mystery blast of cosmic rays, according to a Japanese study that found a relic of the powerful event in cedar trees.

Analysis of two ancient trees found a surge in carbon-14 -- a carbon isotope that derives from cosmic radiation -- which occurred just in AD 774 and AD 775, the team report in the journal Nature on Sunday.

Earth is battered by protons and other sub-atomic particles which are blasted across space by high-energy sources.

The particles collide with the stratosphere and react with nitrogen to create carbon-14, which is then absorbed into the biosphere.

A team led by Fusa Miyake of Nagoya University found that levels of carbon-14 in the two cedars were about 1.2 percent higher in 774 and 775 compared to other years.

This may not sound much, but in relation to background concentrations of carbon-14, the difference is huge.

One source of cosmic rays is the Sun, whose activity varies in phases called Schwabe cycles. Our star also throws the occasional tantrum, spouting bursts of energy called solar flares.

But Miyake’s team say that the cosmic whack of 774-775 cannot be attributed to the Schwabe cycle of the time -- and it is far bigger than any known flare from the Sun.

The other possibility is a supernova, or a star that explodes at the end of its life in a welter of gamma radiation.

It burns brightly for a few years before cooling into a remnant that can glow sullenly for centuries.

But there is no documented record in the northern hemisphere of a supernova at around 775.

Recent surveys of cosmic radiation show that, at this time, there were the remains of two nearby supernovae called Cassiopeia A and Vela Jr.

But they were probably too far away or not powerful enough to be responsible for the carbon-14 burst on Earth.

"With our present knowledge, we cannot specify the cause of this event," Miyake admits.

"However, we can say that an extremely energetic event occurred around our space environment in AD 775 ... (but) neither a solar flare nor a local supernova is likely to have been responsible."

The team are delving deeper into the mystery.

They intend to fine-tune the search for the source by looking at telltale traces of beryllium and nitrate isotopes.

They also plan a wider search of historical documents to see if, 1,237 years ago, anyone noted a strange flare in the sky.


Article from: france24.com





Also tune into:

Wallace Thornhill - The Electric Universe

David Talbott - Hour 1 - Symbols of an Alien Sky

Walter Cruttenden - Ancient Cosmology: A Map of the Future

Robert Schoch - Hour 2 - Forgotten Civilization & Catastrophic Solar Outbursts

Will Hart - Solar Flare Apocalypse & Comets

Geoff Stray - Crop Circles, Catastrophe, Sun Spot Cycles & the 2012 Connection

Edmund Marriage - Global Catastrophe, Restart of Civilization & The Anu-Nagi (The Shining Ones)

Andy Lloyd - Dark Star, Evidence for Planet X








Related Articles
Electrical Engineer Can Feel Magnetic Fields Through Magnets Implanted in His Fingertips
Wallace Thornhill: Stars in an Electric Universe DVD
Scientists Claim Trees Give Off Electricity
Body shock: The electricity inside your body
The Moon: Aristarchus Crater - Electric Blue Gem or Fusion Reactor?


Latest News from our Front Page

Norway Joins the Race to Develop Killer Robots
2014 10 24
Norway is a large exporter of weapons, which makes the resolution of the debate about creating killer robots an important issue for everyone.  One could debate the overall merits or failings of robotic systems, but an area that clearly has become a point for concern on all sides is the emergence of "killer robots." According to robotics pioneer, David Hanson, ...
Gene That Once Aided Survival in the Arctic Found to Have Negative Impact on Health Today
2014 10 23
In individuals living in the Arctic, researchers have discovered a gene variant that arose thousands of years ago and most likely provided an evolutionary advantage for processing high-fat diets or for surviving in a cold environment; however, the variant also seems to increase the risk of hypoglycemia, or low blood sugar, and infant mortality in today’s northern populations. {snip} “Our work ...
The Ebola hoax: questions, answers, and the false belief in the “One It”
2014 10 23
“The Reality Manufacturing Company doesn’t just sell ‘fake paintings’ that are easy to spot. No. They also sell images that are geared to mesh with people’s deeply held instincts and thereby produce rigid false beliefs. People are sure that if they gave up such beliefs, their world would fall apart and blow away in the wind.” ...
New Controversial Theory Suggests "Hobbits" Were Not Human - Who Were These Mysterious Beings?
2014 10 23
The origin of the Hobbit species remains a challenging subject to scientists. The Hobbit’s discovery confirmed the view that the Earth was once populated by many species of human, but new research the Hobbit’s were not human at all! So, who were these mysterious beings? Where did they come from? The idea that our species, Homo sapiens, was the only species of human on ...
Right into enemy hands? ISIS shows off new weapons allegedly airdropped by US (VIDEO)
2014 10 23
Islamic State has published a new video in which a jihadist shows off brand-new American hardware, which was purportedly intended for the Kurds they are fighting in the Syrian border town of Kobani. The undated video, posted by the unofficial IS mouthpiece “a3maq news”, sees a jihadist showing several boxes of munitions with English-language markings, with a parachute spread out on ...
More News »