Consider Three Galaxies, Alpha, Beta and Gamma

question 51

Multiple Choice

Consider three galaxies, Alpha, Beta and Gamma. An astronomer in Beta sees each of the other two galaxies moving away from him in opposite directions at 0.70c. At what speed would an
Observer in Alpha see the galaxy Gamma moving?

• A) 0.94c
• B) 0.98c
• C) 0.82c
• D) 0.70c
• E) 1.4c

---

Definitions:

Secondary Data

Information that has already been collected and analyzed by other sources, such as reports, studies, and databases, used for research or decision-making purposes.

Primary Data

Original data collected firsthand for a specific research purpose through surveys, interviews, or experiments.

Syndicated Data

Data collected by market research firms that is sold to multiple companies, often used for market analysis and benchmarking.

In-Depth Interviews

Qualitative research methods involving detailed, open-ended questions to gain comprehensive insights into an individual's thoughts and behaviors.