How Do Astronomers Know That the Luminous Regions of Active

question 90

Multiple Choice

How do astronomers know that the luminous regions of active nuclei of active galaxies are very small

• A)Their nuclei are much brighter than expected.
• B)The orbits of stars near the center of the galactic nuclei are faster than expected.
• C)The luminosity of the nuclei varies over short times.
• D)The color of the nuclei is different than expected.

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Definitions:

Ecological Modernization

A concept in environmental sociology that suggests industrialized societies can reduce environmental damage through technological innovation and regulatory reform.

Greenhouse Gas Emissions

The release of gases into Earth's atmosphere that trap heat, contributing to the greenhouse effect and global warming.

Environmental Issues

Concerns related to the environmental impacts of human activities, including pollution, climate change, deforestation, and loss of biodiversity.

Dominant Social Paradigm

The prevailing set of attitudes, beliefs, values, and practices in a society that influences behaviors and policies.