Analysis of Chelyabinsk meteorite yields size, energy, source and concludes Large Asteroid Impact Risk Underestimated

Chelyabinsk meteor capture

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