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[[File:Railgun-test-general-atomics.gif|thumbnail|General Atomics Blitzer railgun test]]
[[File:Railgun-test-general-atomics.gif|thumbnail|300px|General Atomics Blitzer railgun test in 2008]]
A '''Railgun''' is a type of [[artillery]] that fires projectiles at [[supersonic]] speeds by launching them using [[electromagnetism]] instead of gunpowder or some other chemical propellant. Current expectations for railguns are a 400-mile (643.6 kilometer) range and an impact velocity in excess of [[Mach]] 8.
A '''Railgun''' is a type of [[artillery]] that fires projectiles at [[supersonic]] speeds by launching them using [[electromagnetism]] instead of gunpowder or some other chemical propellant. Current expectations for railguns are a 400-mile (643.6 kilometer) range and an impact velocity in excess of [[Mach]] 8.