For the first time, scientists have observed a collection of particles, also known as a quasiparticle, that's massless when moving one direction but has mass in the other direction. The quasiparticle, called a semi-Dirac fermion, was first theorized 16 years ago, but was only recently spotted inside...
I'm not sure what it would be used for but this is a brand new compound into humanities toolbox that advances physics at the same time. Unexplained phenomena that is also confirming a particle theorised 16y ago. Give Nobel please.
An uneducated hypothesis: have a bunch if these particles move back and forth in unison => directional force using only energy => space travel with infinite fuel