What is the primary scientific reason for observing distant galaxies in the universe?

A) To locate potential new planets for human colonization.

B) To study the universe as it was in the past due to the finite speed of light.

C) To confirm the existence of alien life forms.

D) To precisely measure the current size of the universe.

Explanation

Because light travels at a finite speed, the light we receive from distant galaxies has taken millions or even billions of years to reach us. Therefore, when we observe these distant objects, we are essentially looking back in time, allowing scientists to study the early universe and its evolution.

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