Gravitational Lensing

Gravitational lensing

A) occurs when light passes near a massive object and is deflected by the object's gravitational field.
B) can be used to determine the luminosity of a galaxy.
C) occurs when the mass of a galaxy is greater than expected from the luminosity of the galaxy.
D) occurs when the mass of a galaxy is less than expected from the luminosity of the galaxy.
E) can be used to determine the recessional velocity of a galaxy.