Physics
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We summarize the week's scientific breakthroughs every Thursday.
- 			 Tech TechA new airplane uses charged molecules, not propellers or turbines, to flyA small aircraft prototype is powered by ionic wind flowing in one direction and pushing the plane in the other. 
- 			 Particle Physics Particle PhysicsNuclear ‘knots’ could unravel the mysteries of atomsSkyrmions might help loosen scientific snarls in studies of atomic nuclei. 
- 			 Math MathIt’s official: We’re redefining the kilogramIn May 2019, the system of measurement will be upgraded to rely on fundamental constants. 
- 			 Quantum Physics Quantum PhysicsPhysicists wrangled electrons into a quantum fractalThe tiny, repeating structure could reveal weird behavior of electrons in fractional dimensions. 
- 			 Physics PhysicsBizarre metals may help unlock mysteries of how Earth’s magnetic field formsWeyl metals could simulate the dynamo effect that generates the planet’s magnetism, a new study suggests. 
- 			 Particle Physics Particle PhysicsPhysicists measured Earth’s mass using neutrinos for the first timeCounting tiny particles that can zip straight through the Earth reveals what the planet is like on the inside. 
- 			 Materials Science Materials ScienceQuestions about toxic red tides, and more reader feedbackReaders had inquiries about a new deicing material, harmful algal blooms and more. 
- 			 Physics PhysicsA new measurement bolsters the case for a (slightly) smaller protonThe PRad physics experiment has come up with a result favoring a punier proton. 
- 			 Physics PhysicsVanadium dioxide’s weird phase transition just got weirderWhen shifting from one crystalline structure to another, the atoms inside vanadium dioxide bumble around a lot more than expected. 
- 			 Astronomy AstronomyThree gas clouds nearly grazed the edge of the Milky Way’s black holeGas clumps cozy up to the Milky Way’s enormous black hole, new observations reveal. 
- 			 Physics PhysicsThis cloud-zapping laser could help scientists create a quantum internetA powerful fast-pulsing laser can bust through clouds to make quantum communication via satellite easier. 
- 			 Particle Physics Particle PhysicsWhat the electron’s near-perfect roundness means for new physicsThe electron remains stubbornly round, meaning we may need to build beyond the Large Hadron Collider to find physics outside of the standard model.