Active Galaxies and Quasars
As you know, our Milky Way is one of billions of galaxies in the Universe.
Also, it is now known that all other galaxies are speeding away from us,
with the speed being proportional to the distance. Knowing how far an
object is away from us, and how fast it is speeding away, then you can
calculate how long ago it left our neighborhood. This can be done by
dividing the distance by the speed.
Look at the following data from 3 different galaxies, then calculate how
long ago each galaxy moved away from us. Do not use any commas when
typing in your answer!
- What can be said about the velocity that these galaxies are traveling?
- How does this confirm the idea that our universe evolved from a single point in time?
This activity was developed by Jacqueline Slay, Largo High School, Largo, MD