February 15, 2013
inothernews: REMAINS OF THE DAY  A gaping hole in the ice on Lake Chebarkul, thought to be made by a piece of debris from the meteor that exploded above the Russian city of Chelyabinsk on Friday. “It was a very, very powerful event,” says Margaret Campbell-Brown, an astronomer at the University of Western Ontario in London, Canada, who has studied data from two infrasound stations near the impact site. Her calculations show that the meteoroid was approximately 15 meters across when it entered the atmosphere, and put its mass at around 40 tons. “That would make it the biggest object recorded to hit the Earth since Tunguska,” she said.   (Photo: Twitter via BreakingNews.com; caption via Nature.com)

inothernews:

REMAINS OF THE DAY  A gaping hole in the ice on Lake Chebarkul, thought to be made by a piece of debris from the meteor that exploded above the Russian city of Chelyabinsk on Friday. “It was a very, very powerful event,” says Margaret Campbell-Brown, an astronomer at the University of Western Ontario in London, Canada, who has studied data from two infrasound stations near the impact site. Her calculations show that the meteoroid was approximately 15 meters across when it entered the atmosphere, and put its mass at around 40 tons. “That would make it the biggest object recorded to hit the Earth since Tunguska,” she said.   (Photo: Twitter via BreakingNews.com; caption via Nature.com)