Earth Has Been Sending Out Radio Messages for About 120

question 45

Multiple Choice

Earth has been sending out radio messages for about 120 years, so detection equipment on a hypothetical planet 120 light-years away might just now begin receiving them. What is the parallax angle subtended by a system at this distance? Can astronomers detect such a parallax angle with existing technology?

• A) 0.0026 arcseconds; no
• B) 0.0084 arcseconds; yes
• C) 0.027 arcseconds; yes
• D) 120 arcseconds; yes

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Definitions:

Public Deference

The respect and esteem shown by the public towards someone due to their position, achievements, or quality of character.

Listening Respectively

involves giving full attention to the speaker, showing respect through body language and responses, and understanding their perspective without premature judgment.

Physical Withdrawal

The process of the body adjusting to the absence of a substance it has become dependent on, often leading to uncomfortable physical and psychological symptoms.

Cyber Loafing

The act of using the internet for personal purposes during work hours, often leading to reduced productivity.