____ show(s) that some quasars are further away than distant galaxies and that space time is curved by massive objects.
A) Double-lobed radio galaxies
B) Blazars
C) The gravitational lens effect
D) Head-tail galaxies
E) Superluminal expansion

Question

Quizplus · Accepted Answer

The gravitational lens effect is caused by the bending of light around massive objects, such as galaxies and galaxy clusters. This effect has been observed in quasars, indicating that they are located behind massive objects and therefore must be even further away than some distant galaxies. This also provides evidence for the curvature of space-time predicted by Einstein's theory of general relativity. Double-lobed radio galaxies, blazars, head-tail galaxies, and superluminal expansion have not been directly linked to the observations mentioned in the question.

____ Show(s) That Some Quasars Are Further Away Than Distant