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3. How did the work of Edwin Hubble and Milton Humason help confirm the idea of an expanding Universe?

A. They found that the farther a galaxy was, the slower it was moving away.
B. They found that the farther a galaxy was, the faster it was moving away.
C. They found that the distances to galaxies could not be measured.
D. They found that the redshifts of galaxies were not related to their distances.



Answer :

GinnyAnswer

Final answer:

Hubble and Humason confirmed the expanding Universe through galaxy distance-velocity relationship.


Explanation:

Edwin Hubble and Milton Humason confirmed the idea of an expanding Universe by observing the relationship between galaxy distances and their velocities. Hubble's Law states that the farther away a galaxy is, the faster it is moving away, which implies the universe's expansion. This was determined by the redshift observed in galaxies, indicating their motion away from us.


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