Which of these stars would have the biggest redshift?
A) a star moving at low speed toward you
B) a star moving at high speed toward you
C) a star moving at low speed away from you
D) a star moving at high speed away from you
E) a star that is not moving away from you or toward you

Question

Quizplus · Accepted Answer

A star moving at high speed away from you would have the biggest redshift because redshift occurs when the wavelength of light is stretched, making the light appear redder, which happens when an object is moving away from the observer.

Which of These Stars Would Have the Biggest Redshift