Memory effect refers to a temporary or permanent loss of capacity in a battery when it’s discharged. Experts don’t totally agree on why this happens or how to keep it from lessening the capacity of ...

Einstein's theory of gravity, general relativity, has passed all tests with predictions that are spot-on. One prediction that remains is "gravitational wave memory"—the prediction that a passing ...

Neutron stars are ultra-dense remnants of massive stars that collapsed after supernova explosions and are made up mostly of subatomic particles with no electric charge (i.e., neutrons). When two ...