In Clusters of Galaxies, the Total Mass of Dark Matter

question 41

True/False

In clusters of galaxies, the total mass of dark matter exceeds the luminous matter by about a factor of 1,000.

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Definitions:

Medium Size Groups

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Focus Groups

A qualitative research method where a group of people are asked about their perceptions, opinions, beliefs, and attitudes towards a product, service, concept, advertisement, idea, or packaging.

Generalizing

The act of applying conclusions or observations from specific instances to broader contexts or populations.

Client-satisfaction Questionnaires

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