Small objects enter Earth’s atmosphere all the time. NASA guesses that about 100 tons of material, mostly dust and gravel, do so daily. Few of them are interstellar. And few of them are of a size to make an impressive explosion. On December 18, 2018, for example, a meteor spotted off the Kamchatka Peninsula on the far eastern edge of Russia produced a blast 16 miles above the Earth’s surface that released ten times the energy of the Hiroshima atomic bomb. It was estimated to be about 10 meters in diameter and weigh about 1,600 tons, and to be the third largest meteor to impact Earth since
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