Astronomers can detect the spin rates of stars by

Question

Quizplus · Accepted Answer

The Doppler effect is the most direct and reliable method of detecting the spin rates of stars. It involves measuring the slight shifts in the wavelengths of light emitted by a rotating star, caused by the star's motion toward or away from Earth. This method has been used to measure the rotation rates of many stars, including our Sun. Temperature and changes in temperature, as well as absorption spectra, can provide some information about a star's rotation, but they are indirect and less reliable than the Doppler effect.

Astronomers Can Detect the Spin Rates of Stars by