Tuesday, March 20, 2018
Contact us    |    Advertise    |   Help   RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos
Find: in
This news story is archived which means that, while it is still available to view, the information contained within may be outdated and the original source site/link may no longer be viewable.

For the most recent stories, please visit either the site's home page or main news section.

Japanese scientists find 8th-century mystery

Posted on Monday, 4 June, 2012 | Comment icon 6 comments | News tip by: Karlis

Image credit: Wikimedia Commons

Earth was hit by a mysterious blast of cosmic radiation at some point during the 8th century AD.

Scientists in Japan have been able to learn of the incident through the examination of ancient cedar trees which contain carbon-14, an isotope derived from cosmic radiation. The research found that around that time the levels of carbon-14 were 1.2% higher than usual, indicating a significant event such as that produced by a massive solar flare or supernova.

"With our present knowledge, we cannot specify the cause of this event," said Fusa Miyake of Nagoya University. "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."

"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."

  View: Full article

 Source: Associated Press

  Discuss: View comments (6)


Recent comments on this story
Comment icon #1 Posted by Englishgent on 4 June, 2012, 6:48
Possibly a gamma ray blast. Sounds likely
Comment icon #2 Posted by jgorman628 on 4 June, 2012, 12:15
Too early to be any sort of side effect from the crab nebula.
Comment icon #3 Posted by Mikko-kun on 4 June, 2012, 12:41
A Tunguska event in that time? Woudn't that leave traces to the surrounding environment too?
Comment icon #4 Posted by Bildr on 4 June, 2012, 22:34
http://www.nature.com/news/mysterious-radiation-burst-recorded-in-tree-rings-1.10768 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 ad 774 and ad 775, was detected by looking at the amounts of the radioactive isotope carbon-14 in tree rings that formed during the ad 775 growing season in the Northern Hemisphere. The increase in 14C levels is so clear that the scientists, led by Fusa Miyake, a cosmic-ray physicist from Nagoya... [More]
Comment icon #5 Posted by csspwns on 5 June, 2012, 1:25
shouldnt they test more trees. in the article it said they tested only 2 trees.
Comment icon #6 Posted by Mike the Autist-ic on 7 June, 2012, 17:26
We need to locate the source of the gamma ray burst in our galaxy, to further vindicate the mysterious jump in temperatures in the period of the 770s AD, and too late to be analyzed in astrological terms whether or not it served the rise of Islam to become a world religion (630s AD).

Please Login or Register to post a comment.

  On the forums
Forum posts:
Forum topics:


 Ancient Mysteries & Alternative History
  Ark of the Covenant
  The Great Pyramid of Giza is finally cracked!
  Let's talk mummies
 Stories, Sightings & Experiences
  What’s in the window?
World's last male northern white rhino dies
The last remaining male of the species, Sudan, was put down on Monday after several months of ill-health.
Did a mystic predict Putin's rise to power ?
During a meeting in 1979, blind mystic Baba Vanga allegedly predicted that Putin would 'rule the world'.
New study hints at 'Oumuamua's origins
Researchers believe that it is very likely that the interstellar asteroid came from a binary star system.
Ghostly figure filmed aboard the HMS Victory
Tony Ferguson had been visiting the historic vessel in Portsmouth when he caught something strange on film.
Other news in this category
Could 'super corals' repopulate coral reefs ?
Posted 3-18-2018 | 3 comments
Scientists are attempting to create a breed of coral that is more resistant to the effects of global warming....
Larry Page's autonomous flying taxi revealed
Posted 3-14-2018 | 1 comment
The Google co-founder's flying car start-up Kitty Hawk has created a two-person passenger drone called Cora....
Physicist Stephen Hawking has died aged 76
Posted 3-14-2018 | 25 comments
One of the greatest scientific minds of our age, Hawking passed away in the early hours of this morning....
Beware of mystery 'Disease X', scientists warn
Posted 3-11-2018 | 14 comments
The World Health Organization has highlighted the potential danger of a deadly, as-yet-unknown pathogen....
Robot can solve a Rubik's Cube in 0.38 seconds
Posted 3-10-2018 | 8 comments
The device is able to solve the puzzle so quickly that to the naked eye it seems almost instantaneous....
Diamond contains never-before-seen mineral
Posted 3-9-2018 | 5 comments
A tiny diamond has been found to contain a type of mineral that has, until now, never been seen in nature....
Amazon Echo users plagued by creepy laugh
Posted 3-8-2018 | 20 comments
The voice-activated home assistant has reportedly been laughing out of the blue for no apparent reason....

 View: More news in this category
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.7 Unexplained-Mysteries.com © 2001-2017
Privacy Policy and Disclaimer   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ