In 1974, Astronomers Sent a Message Toward Globular Cluster M13

question 15

Multiple Choice

In 1974, astronomers sent a message toward globular cluster M13. If life exists there, and it returns our signal, we won't receive it for at least another 44,000 years. Why?

• A) It will take that long for the space probe carrying our signal to reach the life forms there.
• B) Based on the age of the stars in M13, we anticipate it would take that long for a civilization to evolve enough to interpret and respond to our signal.
• C) M13 is far enough away that even light takes a very long time to reach it.
• D) It will take that long before our Solar System and M13 are properly aligned again.
• E) The universe will have expanded substantially after M13 receives our message, therefore taking much longer for their response to make it back to Earth.

---

Definitions:

Choreographed Dance

involves the design and execution of a series of movements and steps, often set to music, created and arranged by a choreographer.

Implicit Memory

A type of long-term memory that enables us to perform tasks without conscious awareness of these previous experiences.

Sensory Receptor

A specialized cell or structure that responds to environmental stimuli such as light, sound, or temperature, and converts them into neural signals.

Deep Pressure

A tactile sensory input that involves firm, steady pressure applied to the body to help reduce stress and anxiety.