The ghostly blue flame stunned researchers when it first showed up unexpectedly in a laboratory experiment. Now scientists have determined the structure of this “blue whirl.” Four separate types of ...

A chameleon-like force that shifts its nature based on its environment could explain a major physics quandary: how the mysterious substance called dark energy is compelling the cosmos to expand faster ...

Why is pancake syrup an example of a resistive force? Some forces are called contact forces because they require objects to touch. One is tension force, found in stretched wires. Another is the force ...