Star Wars Lightsaber May be Possible with New Ability to Stick Light Particles Together

We may just be one step closer to creating an actual lightsaber. Scientists have figured out how to stick photons together, creating the first ever "molecules" of light.

Photons are the particles that make up light, and don't behave like particles of matter. In fact, they can pass through one another and don't bind together to make larger structures. This means that something like, say, a lightsaber, would be impossible to build. But what if there was a way to cause photons to act like regular matter? That's exactly what scientists may have accomplished in their new study.