What Observational Evidence Seems to Indicate the Presence of a Supermassive

question 67

Multiple Choice

What observational evidence seems to indicate the presence of a supermassive black hole at the center of the Milky Way's neighboring galaxy, M31, in Andromeda?

• A) slow but measurable motion of the Milky Way Galaxy toward M31 under the intense gravitational force of its black hole
• B) very intense X-ray emission from a very small central core, indicating a very hot source
• C) spectroscopic measurements of extremely high and symmetric Doppler shifts from stars orbiting rapidly around a massive object near the galactic center
• D) small but dark region on detailed photographs of M31, showing an area from which light cannot escape

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Definitions:

Adolescence

The period of development, both psychological and physical, occurring from puberty to the age when an individual is legally considered an adult.

Pressing Issue

A matter or problem that requires immediate attention and action due to its urgency or significance.

Gender Differences

Variations in characteristics, behaviors, and roles traditionally associated with being male or female in a particular culture or society.

Identity Formation

The process of developing a distinct sense of self and coherent identity, often occurring during adolescence, involving exploration of personal values, beliefs, and goals.