Answered: Light from the star, Alpha Centauri,…

Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in: A. 4.2 seconds B. 42 seconds C. 4.2 years D. 42 years

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter18: The Universe

Section: Chapter Questions

Problem 1FIB: The apparent change of the position of a star due to the Earths orbiting the Sun is called ___....

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Concept explainers

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.

Question

Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in:

A. 4.2 seconds

B. 42 seconds

C. 4.2 years

D. 42 years

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