Suppose Astronomers Were Able to Detect Radio Signals from an Intelligent

question 196

Multiple Choice

Suppose astronomers were able to detect radio signals from an intelligent civilization in the Coma cluster of galaxies. If they were to send a message to this civilization, how long would it take to get a reply?

• A) 600 million years
• B) 150 million years
• C) 75 million years
• D) 300 million years

---

Definitions:

Heart Murmur

A sound, heard through a stethoscope, indicating turbulent blood flow within the heart, which can signify a variety of heart conditions.

Bell of Stethoscope

The cup-shaped end of a stethoscope used for listening to low-pitched sounds in the body.

Moro Reflex

An infantile reflex normally present at birth and disappearing around 4 to 6 months of age, characterized by a "startle" response to loud noises or sudden movements.