2026 October 25 - Dark Matter in a Simulated Universe

This computer simulation visualizes dark matter filaments and concentrations of ordinary matter in a cosmic web. We explore the gravitational evidence behind the model, what simulations test, and why dark matter's physical identity remains unknown.

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 above 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.