Why Are Some Galaxies' Spectra Blueshifted Rather Than Redshifted

question 65

Multiple Choice

Why are some galaxies' spectra blueshifted rather than redshifted?

• A) Some distant galaxies are gravitationally lensed.
• B) Some nearby galaxies are attracted to us because of the mass of the Milky Way.
• C) Some nearby galaxies have vigorous star formation and are much bluer than others.
• D) Some distant galaxies have AGN at their centers.

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Definitions:

Control Circuit

A low-power circuit used to control the operation of a main circuit or device, often involving relays, switches, and sensors.

Eleven-Pin

Refers to a type of connector or relay base with eleven pins used for electrical or electronic connections.

Ice Cube Relay

A compact, square-shaped plug-in relay often used for control circuits, recognizable by its clear or translucent casing.

Two-Position

A type of control or device that has two distinct settings or positions, such as "on/off" or "open/closed."