To what does the phrase "superluminal motion" refer?
A)the motion of relativistic electrons in magnetic fields
B)the apparent motion of jets of gas at speeds faster than light
C)the apparent motion of arcs of light caused by gravitational lensing
D)the motion of galaxies at redshifts z 1

Question

To what does the phrase "superluminal motion" refer?
A)the motion of relativistic electrons in magnetic fields
B)the apparent motion of jets of gas at speeds faster than light
C)the apparent motion of arcs of light caused by gravitational lensing
D)the motion of galaxies at redshifts z > 1

Quizplus · Accepted Answer

Superluminal motion refers to the apparent motion of jets of gas at speeds faster than light, seen in radio and optical images of quasars and active galaxies.

To What Does the Phrase "Superluminal Motion" Refer