The planet Earth is continually under bombardment. Each day, roughly 100 tons of small meteoroids and space debris – some as large as a meter in diameter, but most smaller than a grain of sand – strike the atmosphere. Moving at speeds in excess of 40,000 kilometers per hour, these meteoroids are often seen as bright streaks in the sky as they burn up from atmospheric friction. Fortunately, because they are consumed high in the atmosphere, meteoroids and space dust pose no threat to humans or other life on Earth.
"Strategic Nuclear Weapons for Planetary Defense,"
Space and Defense: Vol. 8:
0, Article 4.
Available at: https://digitalcommons.unomaha.edu/spaceanddefense/vol8/iss0/4
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