Alpha Centauri Is Not Only the Closest Star System to Us

question 38

Multiple Choice

Alpha Centauri is not only the closest star system to us it is actually a triple star system) but it also seems to be an excellent place to look for extraterrestrial life. It is about 4.3 light years away from Earth. If an astronaut claims her journey there and back only took 6.3 years, then how fast was she traveling? Assume she made a fast turnaround once she arrived there!)

• A) 0.68c
• B) 0.73c
• C) 0.86c
• D) 0.81c
• E) 0.54c

---

Definitions:

Cultural Standards

The norms and values that a specific group of people consider to be acceptable and important.

Legally Insane

A legal term describing a person who is unable to understand the nature of their actions or distinguish right from wrong due to mental illness at the time of committing a crime.

Self-destructive

Behaviors or actions that cause harm or potential harm to oneself.

Distressed

Experiencing anxiety, sorrow, or pain.