The Discovery of the Gravitational Lens Effect for Quasars

question 48

Multiple Choice

The discovery of the gravitational lens effect for quasars

• A) shows that quasars were located within the local group of galaxies.
• B) shows that quasars were giant planets in our solar system.
• C) shows that quasars are much further away than the distant galaxy that forms the gravitational lens.
• D) proves Newton's theory of gravitation by showing that the photon is affected by gravity.
• E) proves the existence of supermassive black holes at the center of active galactic nuclei.

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