18 October 2011

Billion Tonne Comet May Have Missed Earth By A Few Hundred Kilometres in 1883

Billion Tonne Comet May Have Missed Earth By A Few Hundred Kilometres in 1883
Technology Review
October 17, 2011
A re-analysis of historical observations suggest Earth narrowly avoided
an extinction event just over a hundred years ago...
http://www.technologyreview.com/blog/arxiv/27264/