In order to appear superluminal, a few conditions must be satisfied by the material under observation. One of these is that:
A)the material must consist of neutrinos that can, in fact, exceed the speed of light.
B)the material must be moving directly away from us.
C)the material must be moving close to the speed of light.
D)we must be able to isolate a single wavelength, usually 21 cm, for observation.

Question

Quizplus · Accepted Answer

The phenomenon of appearing superluminal (faster than light) is often associated with objects moving at speeds close to the speed of light. This high speed, combined with specific angles of observation, can create the illusion of superluminal motion.

In Order to Appear Superluminal, a Few Conditions Must Be