Light Travel Time: Because of the Finite Speed of Light

question 23

Essay

Light Travel Time: Because of the finite speed of light, we see more distant objects as they were in the past. For example, we see the star Alpha Centauri as it was 4.4 years ago, and the Andromeda Galaxy as it was 2.5 million years ago. Astronomers are often asked how we know that these objects still exist when we look at them in the night sky. How would you try to answer this question?

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Definitions:

Reap What You Sow

A proverbial saying meaning that actions have consequences, and people will eventually face the results of their actions.

Nirvana

The state of spiritual perfection.

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The process by which charismatic authority is institutionalized and embedded into a formal structure or organization.

New Religious Movement

A term for faiths that have emerged recently and are distinct from established religious institutions, often seen as unorthodox or modern.