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Massive boom over US was a meteor explosion as powerful as 300 tons of TNT, NASA confirms

Footage from a satellite confirmed that a May 30 sonic boom heard over the northeastern US was from a meteor, NASA stated.
New Scientist

Is a deadly asteroid about to hit Earth? Meet the man who can tell you

Richard Binzel has been watching the skies for hazardous asteroids for more than 50 years. In 1995, he proposed the Near-Earth Object Hazard Index, later renamed the Torino scale, which rates ...