NASA has issued their final update on the New Year's Day meteor that likely caused the "boom" heard in Pittsburgh on New Year's Day.
A post on the NASA Meteor Watch Facebook page said, "A nearby infrasound station registered the blast wave from the meteor as it broke apart; the data enabled an estimate of the energy at 30 tons of TNT. If we make a reasonable assumption as to the meteor’s speed (45,000 miles per hour), we can ballpark the object’s size at about a yard in diameter, with a mass close to half a ton."
NASA also added, "Had it not been cloudy, the fireball would have been easily visible in the daylight sky - crude estimate indicates about 100 times the brightness of the Full Moon."
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