Analysis of Chelyabinsk meteorite yields size, energy, source and concludes Large Asteroid Impact Risk Underestimated
![Chelyabinsk meteor capture](http://alpha-lyrae.co.uk/wp-content/uploads/2013/11/Chelyabinsk-metoer-capture-250x143.jpg)
Two teams report in Nature their analysis of the Chelyabinsk meteorite estimating the energy to be 500kt equivalent of TNT and find a common origin, 2km diameter asteroid 86039 (1999NC43) located between the orbits of Mars and Jupiter. Click to read more