Skip to navigation | Skip to content  Russian meteor's impact
circled Earth, twice  Chelyabinsk meteor  The researchers used
data from monitoring stations around the globe to estimate the
energy of the Chelyabinsk event (Source: YouTube)  Big boom When
a meteor slammed into the atmosphere last February, it produced
a powerful shock wave that blasted the city of Chelyabinsk,
causing property damage and inflicting over 1500 injuries.  Now,
an analysis of data gathered by global detectors using to detect
ultra-low frequency acoustic waves, has revealed that the
meteor's shock wave travelled all the way around the globe,
twice.  The International Monitoring System (IMS) network
operated by the Comprehensive Nuclear-Test-Ban Treaty
Organization (CTBTO) is used to detect infrasound evidence of
nuclear tests. That February morning, the network detected the
most powerful event it had ever seen.  But this signal wasn't a
nuclear weapon, it was a high-speed, 10,000 tonne chunk of space
rock carrying out a surprise atta