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Why do astronomers conclude that quasars are very far away?
Difficult
Challenging or requiring substantial effort to accomplish, understand, or endure.
Identity Formation
The development process by which an individual constructs a sense of self or identity, influenced by personal experiences and societal factors.
Cross-Sectional
Cross-Sectional refers to a type of observational study that analyzes data from a population, or a representative subset, at a specific point in time.
Graduate Student
An individual engaged in advanced academic studies beyond the undergraduate level, typically focusing on a specific field of study.
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