Elliot Shank<p>“The Story of Galaxy Clusters (and Abell 1)”</p><p>Really neat discussion of the history of astronomy.</p><p><a href="https://www.youtube.com/watch?v=kbkAsr53mEM" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">youtube.com/watch?v=kbkAsr53mEM</span><span class="invisible"></span></a></p><p><a href="https://mastodon.social/tags/astronomy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>astronomy</span></a> <a href="https://mastodon.social/tags/DeepSkyVideos" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DeepSkyVideos</span></a> <a href="https://mastodon.social/tags/historyOfScience" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>historyOfScience</span></a></p>