Physicists have uncovered a hidden third form of magnetism that challenges more than 100 years of established physics. Called altermagnetism, the discovery could transform future computing and electronics while opening an entirely new frontier in quantum research.
Gravity works because mass warps space into time, so following the linear time into the warp causes gravity. We know how gravity works. We don’t know how (or at least I don’t) know why exactly mass causes spacetime to warp.