Galaxy Doppler Examples - 13b - Intro to Astronomy Sessions

Using the Doppler shift equation to calculate the redshift velocities of different galaxies.
You can find a catalog of galaxy (and star) spectra at: cas.sdss.org/dr18/
To search for some of the spectra in a fairly simple way (more detailed methods are available) at the top bar go to "More Tools", then "Get Plates", then select a plate from the SDSS survey and it'll list the spectra for a few hundred objects on that plate.
Full Series Playlist: • Intro to Astronomy Ses...
Please note that this was designed as an introductory survey of astronomy course, mostly for non-science majors, and does simplify many of the topics accordingly. I encourage people who are just getting into astronomy to use this as a jumping off point for more in depth studies. I've tried to edit out specific references to my course (regarding assignments, tests, etc.) but I might have missed some. Finally, scientific fields are constantly advancing, with new data and studies resulting in our ideas being continually improved. This means some of the ideas presented here may soon be out of date, so I again encourage people to continue to investigate whichever topics are of particular interest to you.
Opening Image Credit: www.nasa.gov/feature/goddard/...