Suppose there are 12000.0 civil actions broadcasting radio signals in the Milky Way Galaxy at the moment. On average, how many stars would have to be search before a signal is heard? Assume that there are 3 x 1011 stars in the Galaxy and one civilization per star.

Suppose there are 12000.0 civil actions broadcasting radio signals in the Milky Way Galaxy at the moment. On average, how many stars would have to be search before a signal is heard? Assume that there are 3 x 1011 stars in the Galaxy and one civilization per star.

The Solar System

10th Edition

ISBN:9781337672252

Author:The Solar System

Publisher:The Solar System

Chapter17: Astrobiology: Life On Other Worlds

Section: Chapter Questions

Problem 4P

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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.

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Suppose there are 12000.0 civil actions broadcasting radio signals in the Milky Way Galaxy at the moment. On average, how many stars would have to be search before a signal is heard? Assume that there are 3 x 10¹¹stars in the Galaxy and one civilization per star.

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