PhysicsThat's odd: Why is gravity so weak?Why isn’t an entire planet’s gravity enough to rip a magnet off your fridge door? Finding an answer is essential to unify physics and explain our existenceFeatures
TechnologyPentaquark discovery at LHC shows long-sought new form of matter Despite being predicted in the 1960s, the pentaquark is a particle so elusive even the world's largest physics experiment could only discover it by accident News