Let's face it, there are times when something like a laser pistol, a fancy light-up sword, or the ability to crush people with your mind just won't get the trick done. When you're commanding an entire fleet of ships hell-bent on invasion, you need a weapon that'll really get things done. In the world of science fiction, you have quite an arsenal to choose from. Check out our list of planet-ending weapons after the jump, and get ready to go on the hunt.

  • The Wave Motion Gun: In the future world of Starblazers, an old battleship called the Argo (the Yamato in Japan) has been retrofitted as a spaceship, complete with a massive gun mounted inside the prow of the ship called The Wave Motion Gun. It fires a massive blast of laser energy out the front, and was frequently used by the crew to battle foes when they were outmatched. However, it took forever to power the damn thing up, and required flipping a lot of switches and turning a lot of wheels. So, it wasn't exactly something that you could whip out and use at a moment's notice.
  • Princess Ardala's Orbital Super Shotgun: Princess Ardala was about the vampiest villain to roam space in Buck Rogers in the 25th Century, and she wanted to get Buck in her bed more than anything. In the episode "Escape From Wedded Bliss" she sends a giant mega-cannon to orbit the Earth, and threatens to blow up New Chicago if buck won't marry her. It's impervious to fire from starfighters, and can take out entire cities with one blast. Me-ow.
  • The Genesis Device: Captain Kirk and crew had to deal with a very pissed-off Ricardo Montalban in Star Trek II: The Wrath of Khan. He wanted to get his hands on The Genesis Device, which could transform dead planets into thriving gardens of eden. It just happened to have been developed by one of Kirk's ex-girlfriends, and his bastard child. Khan eventually blows it up while trying to kill Kirk, but only succeeds in turning a nebula into a pretty planet that later falls apart and brings Spock back to life. Not bad for a plastic torpedo.
  • Lexx the Spaceship: Lexx was both the name of the show, and a sentient ship that looked like a dragonfly without wings, and it could destroy entire planets and then eat the debris for lunch. If it didn't get to chow down on planetary body for long periods of time it would get pretty cranky. So, they let him destroy and eat fairly often on the show, mostly because the whole firing of the planet-pulverizing weapon was so dramatic and ate up a lot of the show's special effects budget, so they tried to get the most bang for their buck.
  • Ming the Merciless: The ultimate nemesis in Flash Gordon was always the fu-manchued Ming the Merciless, until he got caucasianized in the recent remake on the Sci Fi Channel. Give us back the old Ming who was armed with Death Rays, Zotranillium Missiles, and even deadly finger rings that could wreak havoc on his favorite target, Earth. Nothing says superweapon like a campy actor with all-powerful evil jewelry.
  • The Jump Start the Sun Themonuclear Payload: In Danny Boyle's woefully underrated movie Sunshine that came out this past summer, scientists were on a months-long journey to the sun in order to deliver a massive nuclear payload that was supposed to help reignite our dying sun. It was the size of the Superdome, and made up of ominous black cubes. It it was powerful enough to get the sun going again, just imagine what it could do in the wrong hands.
  • The Death Star: Probably the coolest and most-remembered superweapon in all of science fiction, the Death Star from Star Wars could fly around the galaxy, blow up planets, house an entire fleet of fights and an army. It also probably had some pretty decent recreational facilities as well. While Luke Skywalker blew up the first one, like any good government the Empire decided to build a second one, but it didn't fare so well either. Here's a thought Empire: instead of calling it "The Death Star," why not label it Children's Hospital Good Ship Lollipop? At least that would throw those damn rebels off the trail.