To find out how fast the Earth is spinning at all, you need to find a reference frame in which, ideally, nothing is moving.

What is the speed of Earth's rotation? Here's why we don't feel a thing, even though Earth spins at 1,000 mph.

NASA's Goldstone Planetary Radar Observes Fast-Spinning Asteroid This series of 41 radar images obtained by the Deep Space ...

Getty Images The team studied 130 observations of a quasar called SBS 1408+544, made over nearly a decade. The quasar they studied is billions of light-years away in the constellation Boötes.