* Astronomy

The February 2011 Christchurch earthquake was a powerful natural event that severely damaged New Zealand's second-largest city, killing 185 people in what has been described as one of the nation's worst peacetime disasters.
The magnitude 6.3 (ML) earthquake that struck the Canterbury region in New Zealand's South Island at 12:51 pm on Tuesday, 22 February 2011 local time (23:51 21 February UTC)
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