Unless you've been living under a rock, you've no doubt seen some of the footage of the Russian meteor that terrorized and injured hundreds just weeks ago. But have you heard the infrasound? Scientists at the CTBTO's International Monitoring System spend their days monitoring the world for nuclear tests, and released this recording of the infrasonic waves from the meteor that broke up over Russia's Ural mountains - the largest sounds ever recorded by them.
Infrasound is low frequency sound with a range of less than 10 Hz. The blast was detected by 17 infrasound stations in the CTBTO's network, which tracks atomic blasts across the planet. The furthest station to record the sub-audible sound was 15,000 km away in Antarctica.