fidelity
发表于 2025-3-30 08:52:07
The Contemporary Hazard of Cometary Impacts, range from about 10 megatons of TNT up to the size of the K/T impactor. The lower threshold for damage is defined by the atmosphere of the Earth, which effectively shields us from smaller projectiles. Up to energies of about a gigaton of TNT, the effects are local or regional for impacts on the lan