2023 February 16 - The Hydra Cluster of Galaxies
Channel: APOD Podcast
Date: 16/02/2023

In today's image, we see one of the nearer clusters of galaxies known as the Hydra cluster. Galaxies tend to group in to large structures like clusters, then superclusters, and finally great filaments. This leaves much of the universe as relatively empty voids. 

This YouTube channel is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: https://apod.nasa.gov/apod/ap230216.html.

I also provide lecture videos to accompany the free OpenStax Astronomy textbook (https://openstax.org/details/books/astronomy/) on another channel. They are avilable here: https://www.youtube.com/playlist?list=PLMahwAGxKuWldeQ_qaIj8c0i7qbfyfLj4 or through this channel: https://www.youtube.com/channel/UCLXFGlTeF86MsI1HqBcuqKQ

Note: All commentary is created by me and is not necessarily approved or sanctioned by APOD or NASA.