(Phys.org) —Scientists have determined that an asteroid that burned up over Russia in February resulted in a shock wave so powerful that it traveled twice around the globe. They made that determination by means of a system of sensors used to detect evidence of nuclear tests. Researchers studied data from the International Monitoring System network operated by the Comprehensive Nuclear-Test-Ban Treaty Organization. Its stations monitor ultra-low frequency acoustic waves, or infrasound, from nuclear test explosions. The system can also detect blasts from other sources. According to BBC News, it was the most powerful event ever recorded by the network.
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