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A comment on A Tunguska size burst destroyed Tall el-Hammam, Bronze Age city in Jordan Valley. Parent comment
If your nuke can slow the asteroid from 20km/s to 19.9 km/s, then you need to nuke it 6 days before it hits earth.
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If your nuke can slow the asteroid from 20km/s to 19.9 km/s, then you need to nuke it 6 days before it hits earth.