The US Navy has just completed a 10-megajoule test fire of their huge rail gun. For the first time ever, they fired a projectile with a velocity of 8,270 feet per second. That's an amazing 5,640 mph, and the gun is only firing at a third of its potential power. The other video shows you what the projectile looks like when loaded.
Kinja is in read-only mode. We are working to restore service.