It's not as clumsy or random as a blaster. It's an elegant weapon from a more civilized age. But it can't really exist, right? Maybe it could!
The idea of the lightsaber comes from the Star Wars saga, but it could be more of a reality than a silver-screen as soon as scientists make a few more technological leaps. But they already cleared one big hurdle.
Harvard physicists found a way to make photons stick together the same way molecules do, when it's in the form of a super-chilled gas.
A photon is a particle of light or other electromagnetic radiation. It carries energy but it doesn't have any mass. It would be the light beam shooting out of the saber, hypothetically. Besides the somewhat far-off idea of the Star Wars lightsaber, this scientific discovery could have a major impact on the world as we know it.
"Lots of modern technologies are based on light, from communication to technology to high-definition imaging. Many of them would be greatly improved if we could engineer interactions between photons," Alexey Gorshkov, NIST physicist, said in a press release.
It would take less energy for photons to through fiber optics systems than it does now and that would lead to drastically reduced energy costs.
This idea and experimentation are both in their infancy, but we'll let you know as this program develops further. So make sure you're staying tuned to what's Happening Now for all of the latest details.