How Did Edwin Hubble Definitively Prove That "Spiral Nebulae" Were

question 78

Essay

How did Edwin Hubble definitively prove that "spiral nebulae" were individual galaxies that were separate from the Milky Way?

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Definitions:

Reward

A positive reinforcement or incentive given in response to desired behavior, often used to motivate or encourage.

Behaviourists

Psychologists or researchers who focus on observable behaviors rather than internal processes such as cognition and emotion.

Personality

The combination of characteristics or qualities that form an individual's distinctive character, often regarded in psychology as patterns of thought, feeling, and behavior.

Independent View

Independent view refers to a perspective that emphasizes the importance of self-reliance and individuality, often contrasting with collectivist or interdependent views in cultural context.