The Pinwheel Galaxy (M101) is a stunning spiral with well-defined arms. Most spiral galaxies (though not all) rotate such that their arms trail the direction of rotation.

Investors should be hedging momentum as the rotation in equities gains traction, according to the Goldman Sachs trading desk. The global chip selloff Wednesday led to the Nasdaq's (COMP.IND) worst ...

Currently, the Earth's inner core is moving slowly and in the opposite direction relative to the rotation of the Earth's surface. Scientists have noted that since the early 1970s, the inner core ...