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Active Galaxies and Quasars - Solution

Active Galaxies and Quasars - Solution

CONGRATULATIONS! You answered all three problems correctly!

DISTANCE
(light-years)
SPEED
(light-years/year)
Galaxy A 30,000,000 0.002 15,000,000,000 years
Galaxy B 60,000,000 0.004 15,000,000,000 years
Galaxy C 90,000,000 0.006 15,000,000,000 years

  1. What can be said about the velocity that these galaxies are traveling?
    Each galaxy travels at a constant velocity. However, the more distant galaxies are traveling faster.

  2. How does this confirm the idea that our universe evolved from a single point in time?
    Each galaxy has been traveling the same amount of time, 15 billion years. This indicates that they came from the same source, thus the Big Bang theory.


This activity was developed by Jacqueline Slay, Largo High School, Largo, MD



 

A service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA/GSFC

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