A meteor’s signature
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This is what an exploding meteor looks like...
The first seismometer is located near Kurchatov, Kazakhstan; the second in Borovoye, Kazakhstan.
The meteor was traveling an estimated 33,000 miles per hour. That's a lot of energy converted to a shock wave.
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Enough, so it appears, to register in South Dakota's Black Hills, too.
NASA said today before it entered our atmosphere, it was only 50 feet wide.
Meanwhile, here's some live coverage of the flyby of the asteroid that got away. This time.
The day Asteroid #2012DA14 hits Earth it will likely explode in our atmosphere, with 1000x the power of Hiroshima atomic bomb
— Neil deGrasse Tyson (@neiltyson) February 15, 2013