An Earth Shattering Ka-Boom

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Quite the meteor in Russia yesterday. Because of car insurance requirements, most Russian vehicles have running dash-cams hence the number of videos. From Russia Today:
Meteorite hits Russian Urals: Fireball explosion wreaks havoc, up to 1,200 injured (PHOTOS, VIDEO)
Russia�s Urals region has been rocked by a meteorite explosion in the stratosphere. The impact wave damaged several buildings, and blew out thousands of windows amid frigid winter weather. Hundreds have sought medical attention for minor injuries.

Around 1200 people have sought medical attention in Chelyabinsk alone because of the disaster, the region's governor Mikhail Yurevich told RIA Novosti. Over 110 of them have been hospitalized and two of them are in heavy condition. Among the injured there are 159 children, Emergency ministry reported.

Army units found three meteorite debris impact sites, two of which are in an area near Chebarkul Lake, west of Chelyabinsk. The third site was found some 80 kilometers further to the northwest, near the town of Zlatoust. One of the fragments that struck near Chebarkul left a crater six meters in diameter.

Servicemembers from the tank brigade that found the crater have confirmed that background radiation levels at the site are normal.
Lots of photos and video at the site. A big problem is that temps are in the serious sub-zero range and the sonic boom broke a lot of windows. Russia Today has more here and here. The Australian Sydney Morning Herald has some video and a few photos. From Spaceweather:
"Here is what we know so far," says Bill Cooke, head of NASA's Meteoroid Environment Office. "The asteroid was about 15 meters in diameter and weighed approximately 7000 metric tons. It struck Earth's atmosphere at 40,000 mph (18 km/s) and broke apart about 12 to 15 miles (20 to 25 km) above Earth's surface. The energy of the resulting explosion was in the vicinity of 300 kilotons of TNT. A shock wave propagated down and struck the city below, causing large numbers of windows to break, some walls to collapse, and minor damage throughout the city. When you hear about injuries, those are undoubtedly due to the effects of the shock wave, not due to fragments striking the ground. There are undoubtedly fragments on the ground, but as of this time we know of no recovered fragments that we can verify."
And
It is natural to wonder if this event has any connection to today's record-setting flyby of asteroid 2012 DA14. Paul Chodas of the Near Earth Object Program at JPL says no. "The Russian fireball is not related to 2012 DA14 in any way. It's an incredible coincidence that we have had these two rare events in one day."
Interesting times...

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This page contains a single entry by DaveH published on February 15, 2013 1:45 PM.

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