Forbes
Thursday 21st February, 2013
A Geminid fireball explodes over the Mojave Desert in 2009. Credit: Wally Pacholka / AstroPics.com / TWAN Last week’s totally unexpected Russian meteor impact, which injured more than 1200 and damaged some 4000 buildings near Chelyabinsk, provided a harsh wake-up call to those who rarely look skyward. Details about the object that caused the fireball explosion are slowly emerging. But suffice to say, as the largest recorded such event since 1908, NASA is eager to analyze a portion of the fragments. What is known is that at 9:20 AM local Russian time this past February 15th, a 15 to 20-mete…
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