gov't working on hurling jets of molten metal through space with electro magnets
 

These beats the rail gun I built in physics class back in high school.

http://www.newscientist.com/blog/tec...pa-weapon.html

The capacitor powered ones they are developing these days are pretty crazy too. The Navy wants to replace all their ship based guns with them by 2020 or something.

wow, pretty neat :thumbsup