Could you build a relativistic bullet? In theory, yes. In practice, the acceleration, power demand, and atmospheric effects are so absurd that your “bullet” becomes exotic gravel long before it becomes a useful weapon.
A one-kilogram slug at 10% light speed carries roughly 108 kilotons of TNT, but firing it from a railgun would require power levels far beyond modern civilization. Relativistic guns probably are not realistic — but relativistic kill missiles might be.
#science #space #physics #scifi #futurism #relativity
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