Earth Has Been Sending Out Strong Radio Messages for About

question 43

Multiple Choice

Earth has been sending out strong radio messages for about 115 years,so detection equipment on a hypothetical planet 115 light-years away might just now begin receiving them.What is the parallax angle subtended by a system at this distance? Can we detect such a parallax angle with our present technology?

• A) 0.0027 arcseconds; no
• B) 0.0087 arcseconds; yes
• C) 0.028 arcseconds; yes
• D) 115 arcseconds; yes

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Definitions:

Media Richness

Refers to the capacity of a communication medium to effectively convey information and transmit meaning.

Instant Messages

Digital communications that occur in real-time between two or more people over the internet.

Face To Face

Direct interaction between two or more individuals in the same physical space, often seen as more personal and effective for certain types of communication.

Input Technologies

Input technologies are tools and devices that allow users to input data into computers or other electronic systems, such as keyboards, mice, touchscreens, and voice recognition systems.