Grand piano-sized asteroid spotted just 2 hours before hitting Earth - Global News

The energy released when the rock entered the atmosphere was the equivalent of two to three kilotons of dynamite.

A small asteroid struck the Earth’s atmosphere above Iceland last Friday, just two hours after it was spotted by an astronomer. On March 11, Hungarian astronomer Krisztián Sárneczky, from the Piszké… [+2194 chars]

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