In today's image, we see a flow chart which can, in a humorous way, help you to identify a light in the sky. By following the flowchart, you can differentiate between stars, planets, comets, and artificial satellites among other types of objects.

My podcasts are available in video form through this YouTube Channel.

This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

I welcome comments and suggestions about these podcasts. I can be reached here: wagnerastronomy@gmail.com

This work is licensed under a Creative Commons Attribution 4.0 International License.