Radiation from cosmic blast hit Earth in AD 774
Sunday 20 January 2013
A massive cosmic explosion in deep space sent out a pulse of high-energy radiation that hit the Earth in AD 774 and 775 when Charlemagne ruled much of Western Europe, scientists have found.
"Over the past 3,000 years this was the most energetic event to have hit the Earth," said Professor Ralph Neuhauser of the University of Jena in Germany. Last year, scientists discovered rings in Japanese cedar trees that had much higher levels of radioactive carbon 14 than normal for the period. Professor Neuhauser believes the radiation came from a collision either between two black holes or two stars between 3,000 and 12,000 light years away.
- 1 What happens to your body when you give up sugar?
- 3 Japanese island overrun with cats after population explodes
- 4 Delhi bus rapist blames dead victim for attack because 'girls are responsible for rape'
- 5 Have sex with your iPad thanks to the new sex toy no-one asked for
California teacher appears to have hanged herself in her classroom
The City of the Monkey God: Archaeologists claim to have found city lost for 1,000 years in remote Honduran jungle
Ed Miliband deemed less influential than One Direction's Louis Tomlinson by official Doncaster power list
Japanese island overrun with cats after population explodes
Delhi bus rapist blames dead victim for attack because 'girls are responsible for rape'
'Jihadi John': CAGE representative storms off Sky News accusing Kay Burley of Islamophobia
Durham Free School: 'Creationism taught at' free school facing closure
Ukip would cut billions from Scottish budget to fund English tax cuts
Nearly 100,000 of Britain's poorest children go hungry after parents' benefits are cut
End of the licence fee: BBC to back radical overhaul of how it is funded
Ukraine crisis: Top Chinese diplomat backs Putin and says West should 'abandon zero-sum mentality'
£16000 - £46000 per annum: Recruitment Genius: This is an opportunity to join ...
£9 - £13 per hour: Recruitment Genius: This is a great opportunity to join a s...
£25000 - £35000 per annum: Recruitment Genius: Have you got a proven track rec...
£15000 - £18000 per annum: Recruitment Genius: This is a great opportunity for...